Human-bird Interactions Research Articles

Human-bird interactions in the Levant during the Late Pleistocene to Early Holocene: Multi-scalar analysis of avifaunal remains

This paper describes analyses of avifauna from Levantine Late Pleistocene and Early Holocene sites at contrasting scales. We present avian osteological data at Shubayqa, in northeast Jordan, illustrating human-bird-environment interactions over 4000 years offering interpretation of environmental change on avifaunal communities and reorientation in the nature of multi-species relationships at a wetland environment. Comparisons to published avifaunal assemblages investigates bird-human relationships across a broader temporal and geographical span. During the Late Pleistocene and Early Holocene, some of our species gradually transitioned to agriculture. People hunted birds for subsistence but extensive evidence for the symbolic importance of birds suggests complex relationships between species. Avifaunal evidence, therefore, presents insights into two commonly suggested primary causes for the shift from hunter-foragers to agriculturalists – resource pressure and symbolic expression. In this paper, we investigate and try to clarify the relationship between humans and birds at this transitional period in human history, furthering discussions of the shift towards agriculture. We argue humans gradually modified the landscape but this was not a reactionary response to resource stress. Nevertheless, this resulted in the productivity of the landscape increasing and allowed further intensification. Feathers and talons of birds were used for millennia preceding the shift to agriculture and the increase in bird hunting towards the end of the Pleistocene cannot be explained by the increased role of birds in the symbolic realm. The evidence from the avifauna adds weight to the idea of ecological niche construction activities, as people invested in specific locations, increasing productivity of habitats, thus encouraging further investment within some environments.

Birds as sacred ‘children of god’, beholders of spirit and symbols of twinhood: Human–bird interaction among the Nuer in western Ethiopia

Abstract The deep connection between Indigenous communities and nature plays a pivotal role in biodiversity conservation. Ethiopia, one of Africa's priority countries for bird conservation, harbours 821 bird species and 83 ethnic groups of Indigenous people. However, cultural and spiritual ties between Indigenous peoples and bird species remain largely unexplored. This is particularly true for remote Indigenous communities such as the Nuer. Relying on preexisting bird survey data, we conducted focussed group discussions and semi‐structured interviews with Indigenous Nuer in western Ethiopia to explore human–bird interactions and documented associated traditional ecological knowledge and considered their conservation implications. We found that Nuers have strong ties with birds. In Nuer community, birds are collectively known by three interchangeable terms: ‘gaatkuoth’ to mean sacred children of god, ‘kuoth’ meaning bearers of spirit and ‘diit’ symbols of human twins (since birds nurture multiple offspring, they associate the incidence of twins in human with birds). We identified 71 culturally important bird species that were used in seven different use categories. Among these species, 10 were used as bushmeat, five for traditional medicine, eight as fish indicators, seven as omens (believed to indicate upcoming misfortunes), three as amulets (believed to protect against danger when bird's body parts are used as necklaces and bracelets), three as season indicators and 45 for their scenic beauty. An informant consensus factor for species in all use categories was >90%, except for the scenic value, indicating a high homogeneity of knowledge about species uses. Bird species with multiple uses have significant cultural values among locals, emphasizing the need to understand these values in conservation efforts. Nuer traditional systems regulate the direct use of birds including for bushmeat. Hunting is permitted only by impoverished households during severe food shortages and is prohibited for those with a history of twins in their ancestry. The Nuer people exhibit a profound cultural connection to birds, viewing them as sacred and spiritually valuable beings. This deep‐seated reverence and traditional knowledge highlight the importance of integrating Indigenous perspectives into bird conservation strategies to enhance their effectiveness and respect cultural values. Read the free Plain Language Summary for this article on the Journal blog.

Central regulation of appetite in birds: Recent advances and future perspective

Understanding the mechanism of food intake is important for comprehending energy balance, obesity, and the body weight regulation. In particular, examining birds' appetite is critical for conservation efforts, managing human-bird interactions, and understanding the environmental implications of bird feeding practices. In this systematic review, using the PRISMA guideline, we investigated the mediators that were identified as factors affecting the birds' appetite in 2022 and 2023. In order to obtain the appropriate studies, suitable keywords were searched in the relevant electronic databases and an anthology of the desired articles was done. According to the findings, the central administration of adrenomedullin, apelin-13, lipopolysaccharide, neuromedins and spexin causes hypophagia in chickens, while the injection of adiponectin, neuropeptide W (NPW) and phonexin-14 increased the food intake of birds. Also, regarding the members of RF-amide peptide family, neuropeptide VF (NPVF) and neuropeptide FF (NPFF) weakened the food consumption of birds, while kisspeptin and prolactin-releasing peptide (PrRP) strengthened it. The effects observed in birds were similar to mammals in most cases, indicating the structural and general similarities in the regulatory mechanisms of these strains, on the other hand, the contradictory effects between the two species were probably caused by genetic differences. Finally, despite the progress made in identifying the factors and mechanisms involved in regulating the appetite of birds, it is recommended to conduct future studies using modern laboratory methods, especially cellular-molecular methods.

Bird signs can be important for ecocultural conservation by highlighting key information networks in people–bird communities

AbstractThe ways people think, feel, speak about, and act in and with environments are inextricably intertwined with the well-being of other living things, including birds. We report on the kinds of messages contained in 598 examples of locally-defined signs from 498 bird taxa from 169 sources and 123 ethnolinguistic groups. Using Peirce’s three sign forms: symbolic, iconic, and indexical, we analyze one aspect of human–bird interactions: that of reading bird sign for ecological and social interpretations. Understanding ecological semiotic nuance is important for translating between local, regional, and global science, and for respecting autonomous processes of local people attributing value or lack thereof to birds and their habitats. Over one-third of the signs in our sample (216; 36%) were specifically described as omens of some kind, commonly of death, illness, or something “bad”. Three modes of message delivery account for the majority of the data: predicting (60%), bringing (15%; including news, rain, luck), and indicating (15%; including seasonal change, fruit ripening, animals). Reading birds to predict weather (especially rain) was common, as was listening to and interpreting birds’ alarm calls warning of snakes or predators, and knowing that a certain bird indicates the presence of certain other animals, or of a water source. We collected 51 examples of warblish, the imitation or translation of bird sounds into non-onomatopoeic words. We argue for the amplification of ecocultural conservation (attending to histories of human–nonhuman relationships in place) to channel resources and land control to local and Indigenous managers who are immersed in relevant bird–people information networks. We discuss the importance of (1) reduction of uncertainty in local and hyper-local environments, (2) biocultural provocations in which birds fulfill important roles in human society, and (3) informational connectivity and locally-defined interspecies ethical relationships as key elements for inclusive and effective ecocultural bird conservation.

Species traits explain public perceptions of human-bird interactions.

The impacts of urbanization on bird biodiversity depend on human-environment interactions that drive land management. Although a commonly studied group, less attention has been given to public perceptions of birds close to home, which can capture people's direct, everyday experiences with urban biodiversity. Here, we used ecological and social survey data collected in the metropolitan region of Phoenix, Arizona, USA, to determine how species traits are related to people's perceptions of local bird communities. We used a trait-based approach to classify birds by attributes that may influence human-bird interactions, including color, size, foraging strata, diet, song, and cultural niche space based on popularity and geographic specificity. Our classification scheme using hierarchical clustering identified four trait categories, labeled as Metropolitan (gray, loud, seedeaters foraging low to ground), Familiar (yellow/brown generalist species commonly present in suburban areas), Distinctive (species with distinguishing appearance and song), and Hummingbird (hummingbird species, small and colorful). Strongly held beliefs about positive or negative traits were also more consistent than ambivalent ones. The belief that birds were colorful and unique to the regional desert environment was particularly important in fortifying perceptions. People largely perceived hummingbird species and birds with distinctive traits positively. Similarly, urban-dwelling birds from the metropolitan trait group were related to negative perceptions, probably due to human-wildlife conflict. Differences arose across sociodemographics (including income, age, education, and Hispanic/Latinx identity), but explained a relatively low amount of variation in perceptions compared with the bird traits present in the neighborhood. Our results highlight how distinctive aesthetics, especially color and song, as well as traits related to foraging and diet drive perceptions. Increasing people's direct experiences with iconic species tied to the region and species with distinguishing attributes has the potential to improve public perceptions and strengthen support for broader conservation initiatives in and beyond urban ecosystems.

Human Dimensions of the Reintroduction of Brazilian Birds

People's acceptability for wildlife, stakeholders' engagement and involvement are acknowledged as key factors for the success of wildlife reintroduction projects. We analyzed the main National Action Plans (NAPs) (the Brazilian management participatory instrument for the conservation of endangered species) for eight bird species and conducted an online questionnaire with researchers and practitioners involved in those species reintroduction programs. The assessment of the main Brazilian bird's reintroduction programs showed that, in general, efforts have been made to integrate local people into it. Nevertheless, the actions were disconnected, isolated and fragmented. A formal protocol, designed, discussed and approved by experts aiming to address the human dimensions (HD) of human-bird interactions (HBI), preferably to be used in each stage of the reintroduction programs, was not found. Actions considered related to human dimensions are mainly under the umbrella of environmental education interventions or campaigns, more directed to children and youth; correspond to activities performed by locals with the birds and/or captive birds facilities; or, fostering artcraft production or bird watching activities. The weak or sometimes absent human dimensions approach to this important conservation tool may indicate either the novelty for Brazilian researchers and managers of the science of human dimensions within the field of wildlife management or the lack of dialogue between natural and social sciences when wildlife conservation is at stake. Reintroductions are expensive, sensitive, and labor-intensive processes. It becomes necessary due the conservation status of the species and its implementation follows a careful research of biological, ecological and socio-institutional regional background that identifies the drivers of species extinction and plans according to it. Understanding and predicting people's behaviors and its triggers are paramount to successful reintroduction projects. Thus, making use of well-planned HD studies in HBI may be the watershed between success or failure of reintroduction programs. This study was a pioneer initiative of its kind and it aimed to provide sound recommendations for managers, researchers and practitioners to acknowledge the relevance of HD and its core role in the reintroduction of endangered bird species.

The Bronze Age birds in Greece. A zooarchaeological perspective

Bird bones are rare finds in Bronze Age excavations in Greece, though, the presence of bird representations in art of the same period is remarkable. This paper examines this paradox from a zooarchaeological perspective. It records and presents the osteological evidence for bird exploitation by Bronze Age communities in Greece and examines the characteristics of the bird bone assemblages, emphasizing the need for nuance and methodological rigor in interpreting these data. This evidence is then viewed against the contemporary birds’ representations record from the same area. From such a comparative approach, a number of similarities and differences emerge regarding the intensity of human-bird interactions, the preferred bird types or the significance of particular types of birds across the study area. Further study of these discrepancies may offer a better understanding of the role of birds in Bronze Age Aegean.

How Do Urban Parks Provide Bird Habitats and Birdwatching Service? Evidence from Beijing, China

Parks are an important green infrastructure. Besides other benefits for human and animals, parks provide important bird habitats and accommodate most human-bird interactions in cities. Understanding the complex dynamics among park characteristics, bird habitats and park attractiveness to birdwatchers will inform park designers and managers. However, previous studies often examined factors influencing bird habitats and birdwatching activities separately. To fill this gap, we aim to study the whole picture of “parks, birds and birdwatchers” in Beijing, China for its spatial patterns and possible factors which influence bird habitat areas and birdwatching services. We conducted a three-month bird census in at 159 sites and mapped bird habitat areas in parks of Beijing through the maximum entropy method based on results of the bird survey as well as high-resolution remote sensing data. We derived the number of birdwatching records to describe birdwatching activities from the China Birdwatching Record Center website. We used correlation analysis, regression and analysis of variance to investigate factors that may influence areas of bird habitats and the number of birdwatching records for each park. Our results showed that among the 102 parks, 61 provide habitats to breeding birds with an average of 17 ha, and 26 parks generated a total of 330 birdwatching records. Park size, age, proportion of pavement, landscape connectedness, pavement largest patch index and woodland patch density explained 95% of the variation in habitat areas altogether. Bird habitat area alone explained 65% of the variation in the number of birdwatching records. Furthermore, parks with birdwatching records are significantly larger, older, closer to the city center and more accessible than those have no reported birdwatching. These findings have important implications for park management. While park size or age cannot be easily changed, modifying landscape patterns can increase bird habitats in parks, and improving accessibility may attract more birdwatchers to parks that already have considerable bird habitats.

Feathers and food: Human-bird interactions at Middle Pleistocene Qesem Cave, Israel

The presence of fast-moving small game in the Paleolithic archaeological faunal record has long been considered a key variable to assess fundamental aspects of human behavior and subsistence. Birds occupy a prominent place in this debate not only due to their small size and to the difficulties in capturing them (essentially due to their ability to fly and their elusiveness), but also due to their possible role in the symbolic array in regard to non-nutritional elements (feathers, talons, etc.) and as reflectors of complex human–world relationships. In this study, we attempt to contribute to this topic by presenting taphonomical data of bird specimens from Qesem Cave (Israel), dated between 420 and 200 ka. Human-induced damage, including cut marks, peeling and human gnawing, has been identified on wing bones of Cygnus sp., Columba sp., Corvus ruficollis and Sturnus sp. Our evidence suggests that avian exploitation was not limited to food only—either to complement the human diet or as occasional food item—but also presumably for the use of feathers. While the consumption of birds as a dietary source seems to be evident as early as the Early Pleistocene, the non-alimentary use of inedible elements, such as feathers and talons, appears to be a practice from the Middle Paleolithic onwards. We argue that the combined nutritional and symbolic use of birds is one characteristic of the new mode of adaptation practiced already by the late Lower Paleolithic Acheulo-Yabrudian hominins in the Levant starting 400 ka. The Qesem findings point to the possible emergence of new cognitive and behavioral skills, which are followed in later periods in the Old World. Finally, we discuss the possible ontological and cosmological significance of human–bird interactions to illuminate our hypothesis regarding the emergence of a new perception of human relationships with the world as an integral part of the new Acheulo-Yabrudian mode of adaptation.

Archeozoology and taphonomy of bird remains from Grotta di Castelcivita (Salerno, Italy) and clues for human-bird interactions

Grotta di Castelcivita (Campania, Southern Italy) is a cave-site containing a key archaeological sequence for the study of the Middle to Upper Palaeolithic transition in Southern Italy. A Late Mousterian occupation, whose modelled dates span from 47.6 to 41.1 ka cal BP, is followed by layers bearing evidence of the Uluzzian techno-complex, which underlie an articulated Protoaurignacian sequence. The prehistoric deposit is sealed by volcanic sediments attributed to the Campanian Ignimbrite (dated to 39.85 ± 0.14 ka BP), which represent a terminus ante quem for the Palaeolithic occupation of the cave. We present here the study of the avifauna collected during the excavations carried out at Castelcivita by the University of Siena in the years 1975–88. The examined sample is composed of 631 specimens, out of which 486 have been identified according to species, genus, family or order. Bird remains belong to 36 species and at least to 175 individuals. In the Late Mousterian the abundance of species adapted to open environments indicates a cool-temperate climate; water birds, and wood and forest birds are present as well. During the Uluzzian a shift towards colder climatic conditions is testified by the increase in steppe grassland species. In the Protoaurignacian the presence of birds of open and dry environments is more marked, even if climate seems to shift toward milder conditions at the end of this phase. Taphonomic analyses have provided significant evidence for the exploitation of birds by humans across the whole sequence. Clues of human activity on bird remains are attested both in the Mousterian and, more rarely, in the Protoaurignacian by traces, possibly indicating the intentional removal of feathers (in the Mousterian) and other kinds of carcass manipulation. The Uluzzian sample is the richest in human modifications. Some of them are related to an interest for feathers (on Pyrrhocorax graculus, Falco subbuteo and an Accipitriformes of large size). Other modifications (fresh bone fractures, burnt bones, peeling, arrachement) testify to carcass treatments of Galliformes, Anseriformes, Columbiformes, Charadriiformes and Passeriformes. In the Protoaurignacian traces due to anthropogenic activity are rare and there is an increase in bone modifications caused by carnivores. Results allow us to assume that at Castelcivita humans consistently hunted birds for several purposes and exploited (especially during the Uluzzian) some species to acquire an exclusive and ethnographically well-documented resource such as feathers.

Prehistoric Bird Watching in Southern Iberia? The Rock Art of Tajo de las Figuras Reconsidered

ABSTRACTThis paper studies the relationship between humans and birds in the recent prehistory of the Southern Iberian Peninsula. With its high number of bird, mammal, and anthropomorphic paintings, a small rock shelter –Tajo de las Figuras– provides an excellent case study to address this topic. The cave is situated in an ecosystem that, as we will argue, favoured human-bird interactions and enabled prehistoric groups to engage with a diverse and rich bird community at particular times of the year. Even though the recorded depictions can generally be integrated into the wider ‘Schematic’ style regime characterising the recent prehistory of the region, they exhibit some outstanding features including a highly distinct naturalism. This naturalism enables us to identify the represented birds, not only at the family but also at the species level. Our contribution describes these pictorial data and contextualises them with the ecology, archaeology, and archaeozoology of the area. We intend to show that the singularity of the image-corpus registered at Tajo de las Figuras mirrors the unique conditions of human-bird interactions at the time. We suggest that the significance of the images derives from the special location of the cave in the wider landscape encouraging early practices of bird watching.

Escape behaviour of birds in urban parks and cemeteries across Europe: Evidence of behavioural adaptation to human activity

Urban environments are very heterogeneous, and birds living in the proximity of humans have to adapt to local conditions, e.g. by changing their behavioural response to potential predators. In this study, we tested whether the escape distance of birds (measured as flight initiation distance; FID) differed between parks and cemeteries, areas characterized by different microhabitat conditions and human conduct, that are determinants of animal behaviour at large spatial scales. While escape behaviour of park populations of birds was often examined, cemetery populations have not been studied to the same extent and a large-scale comparison is still missing.Overall, we collected 2139 FID estimates for 44 bird species recorded in 79 parks and 90 cemeteries in four European countries: Czech Republic, France, Italy and Poland. Mixed model procedure was applied to study escape behaviour in relation to type of area (park or cemetery), environmental characteristics (area size, coverage by trees, shrubs, grass, chapels, tombstones, flowerbeds, number of street lamps) and human activity (human density, pedestrians speed and ratio of men/women).Birds allowed people closer in cemeteries than in parks in all countries. This pattern was persistent even when focusing on intraspecific differences in FID between populations of the most common bird species. Escape distance of birds was negatively correlated with the size of parks/cemeteries, while positively associated with tombstone coverage and human density in both types of habitat. Our findings highlight the ability of birds to adapt their behaviour to different types of urban areas, based on local environmental conditions, including the character of human–bird interactions. Our results also suggest that this behavioural pattern may be widespread across urban landscapes.

Extraordinary Creatures: The Role of Birds in Early Iron Age Slovenia

ABSTRACTDepictions of birds are overrepresented in the Dolenjska Hallstatt culture, and appear on over a quarter of artefacts depicting animals. A wide variety of artefacts with birds have been found primarily in graves, and crosscut gender, status, and age. However, poor preservation of zooarchaeological remains has made reconstructions of lived human-bird interactions difficult. This study uses ecological and ethological data, combined with local imagery, to provide insight into prehistoric human-bird interfaces in this area, and the cultural conceptions surrounding these interactions. Birds would have been a constant presence in the lives of Dolenjska Hallstatt people; however, human relationships with them were based more on observation than direct interaction. Birds were ubiquitous in imagery, and it is proposed that this stemmed from Dolenjska Hallstatt conceptions of birds as important observers of human actions, ritual mediators, and possibly guides or guardians. Their differences from humans and other animals distinguished them – they were set apart, and depictions highlighted non-normative behaviours. Birds in the Dolenjska Hallstatt worldview were more than animals, ascribed extraordinary capabilities that made them ritually potent and richly symbolic creatures.

The sounds of people and birds

Through combining ethnography of human-bird interactions with analysis of Batek discourses on musical instrument playing, this paper describes the emotional entanglements between human and non-human persons in the Batek’s forest. The argument is made that sound-making and listening are privileged means of deepening the relationships between people and birds, and that these relationships then come to be part of what defines people’s sense of being Batek. Ways of understanding how sound, environment, memory and emotion intertwine are presented, speaking to broader debates surrounding the role of ‘music’ in hunting and gathering societies.

Taphonomy of bird (Aves) remains at Laili Cave, Timor-Leste, and implications for human-bird interactions during the Pleistocene

The significance of the role of birds in hominin evolution in Island Southeast Asia is not clear. Few avian vertebrate deposits have been recovered from archaeological or fossil sites in the region, and their association with either hominin or natural deposition in caves and rock shelters complicates their usefulness in hominin behavioural and palaeoecological reconstructions. In this paper, we assess the taphonomic history of the Pleistocene avian vertebrate remains recovered from Laili Cave, Timor-Leste, dated to between ca. 44.6 to 11.2 ka and in association with abundant lithic material. We use avian taxonomic composition, skeletal element abundance, and bone surface modification data to determine the agent of avian skeletal deposition. Our analyses indicate that the small grassland and woodland birds (quail, buttonquail, song birds), which dominate the assemblage, were deposited by avian predators (probably barn owls) throughout the sequence. Humans possibly hunted the small quantity of larger birds (imperial pigeon, duck). The bird remains suggest that grasslands, woodland savannahs, wetlands, and forest environments were present locally during the Pleistocene.

Birds as Landscape Elements in Urban Parks: A Comparative Study on the Perception between Indonesian and Japanese People

Birds are both a landscape element and a common form of wildlife found in urban parks. Human’s perceptions of their surrounding landscapes need to be understood in order to create better environments. This study aimed to determine and evaluate the aesthetic quality of landscapes regarding birds as landscape elements, and to compare the results between Indonesian and Japanese people. The data were analyzed using scenic beauty estimation, the Mann-Whitney U Test, and the Spearman Correlation. A total of 252 respondents evaluated landscape images and answered a questionnaire. The results showed that landscape images with birds were given lower scenic beauty scores from Japanese respondents than they were from Indonesian respondents. There were significant differences between Indonesian and Japanese respondents in four landscape images with birds and two landscape images with human-bird interactions. Besides this, there were different strengths in correlations between landscape images with and without birds and landscape images with and without human-bird interactions among Indonesian and Japanese respondents. In conclusion, the existence of birds as landscape elements in urban parks had an influence on the perceptions and preferences of Indonesian and Japanese respondents. However, there was a difference in how they appreciated birds as landscape elements. Keywords: cross-cultural, landscape images, preference, scenic beauty estimation, urban wildlife

Fear, stress, and feather pecking in commercial white and brown laying hen parent-stock flocks and their relationships with production parameters

Little is known about the relationship between welfare traits and production in laying hen parent stock (PS). In commercial laying hens and pure lines, it is known that aspects associated with reduced welfare such as high fear, stress, and feather pecking can have negative effects on production. Because PS hens are housed under different conditions than commercial laying hens, the relationship between welfare traits and production may differ. We therefore studied the fear response to a stationary person (SP) and novel object (NO), basal plasma corticosterone (CORT) and whole-blood serotonin levels (5-HT), and feather damage as a proxy for feather pecking in 10 Dekalb White (DW) and 10 ISA Brown (ISA) commercial PS flocks and related these to production data. Because the relationship between welfare traits and production may differ by genetic origin and group size, we also assessed genotype and group size effects. Dekalb White birds were more fearful of a SP, and had more feather damage and lower 5-HT levels than ISA birds. Genotypes did not differ in CORT. A large group size (n > 5,000) was associated with low feed intake and better feed conversion for ISA flocks. For DW flocks, high fear of the NO was associated with low BW, low egg weight, and low feed intake. For ISA flocks, high fear of the SP was associated with high mortality. For both lines, high CORT was related to low egg weight. This is the first study to associate levels of fear and CORT to production in commercial PS flocks. Management of PS flocks should take into account breed differences, group size effects, and effects of human-bird interactions. Further research is needed to determine the effects of fear, CORT, 5-HT, and feather damage in commercial PS flocks on the development of their offspring.

Extensive human presence at an early age of ostriches improves the docility of birds at a later stage of life

While ostriches are relatively wild birds with a short period of domestication, some birds demonstrate a strong interest in humans. Human imprinting of chicks could therefore facilitate the cooperation of birds for assisted reproduction technology purposes, improving the quality of human–bird interactions and consequently promoting the welfare of the birds. We investigated the effect of 4 different husbandry practices performed at an early age (standard husbandry, two extended human care treatments and foster parent care) on the response of one-year-old ostrich chicks (N=206) to human presence. Specifically, we tested whether chicks exposed to more human presence and care (Imprint 1 and 2) would be more docile towards humans, as opposed to those exposed to standard husbandry practices (Standard) or foster parenting (Foster). Behavioural observations were performed 3 times a week for a period of 3 months when the birds reached an age of approximately one year. The following behaviours towards the human observer were recorded: willingness to approach the human (approach), allowing touch by the human (touch), wing flapping, the keeping of a distance from the human (distance), sexual behaviour and aggressive behaviour. We consistently found that Imprint 1, Imprint 2 and Standard chicks were significantly more inclined to approach and create contact with the observer than Foster chicks. However, no differences in approaching, touching, keeping a distance or wing flapping was observed between Imprint 2 and Standard chicks. Furthermore, no sexual or aggressive behaviour repertoires were recorded during the observation period. These results suggest that human imprinted chicks and chicks reared under standard husbandry practices are more docile than chicks reared by foster parents. Hence, such expression of friendly behaviour and apparently reduced fear towards humans could potentially lead to tamer birds, improved welfare and subsequently more efficient production. However, the lack of differences between chicks subjected to a reduced intensity of imprinting and chicks reared under standard husbandry conditions stresses the need for further investigations in this species, and specifically in terms of sexual and/or aggressive display towards humans when the birds reach full sexual maturity.

Erratum to: Ephemeral Aquatic Bird Assemblages in Estuarine Wetlands from South-Central Chile: Using an Intertidal Flat Habitat During the Austral Summer

The use of intertidal environments by aquatic birds is an important topic of study in the northern hemisphere, grouping baseline distributional descriptions to assess human–bird interactions during shellfish harvesting in soft substrates. However, patterns of tidal regime plus human and natural disturbances may differ in areas in the southern hemisphere. We studied the use of an intertidal flat by a temporary (i.e., ephemeral) assemblage of migratory and resident shorebirds and waterbirds in the Queule River Estuary (39° S), in south-central Chile, during the summers of 2003 and 2008. Migrant species such as Whimbrel Numenius phaeopus and resident Southern Lapwing Vanellus chinesis positively selected sandy substrates when feeding during both spring (periods with stronger tidal range) and neap tides (periods with weaker tides). The resident Yellow-billed Pintail Anas georgica only positively selected the muddy–sandy bottom during spring tides. The predominant activity of resident species was feeding during both tides, except for the Yellow-billed Pintail which rested during neap tides. We highlight the importance of microhabitats such as the intertidal flats system as feeding and resting areas for migratory and resident species. We also comment on their conservation and natural modification by mega-earthquake and tsunami effects that may result in the future destruction or generation of these key environments.

Human–Bird Interactions in the United States Upland Gamebird Industry and the Potential for Zoonotic Disease Transmission

Since 1997, highly pathogenic avian influenza subtype H5N1 has emerged to cause severe disease in humans in over 15 countries. Humans who have regular contact with poultry or wild birds may be at greater risk of infection with highly pathogenic avian influenza and other zoonotic avian diseases. To develop preventative measures for transmission of avian influenza to high-risk human populations in the United States, we examined human-bird interactions in the upland gamebird industry. Upland gamebird permit holders were surveyed for information on human-bird contact, biosecurity practices, facility management practices, flock/release environment, and bird health. Results suggest that some upland gamebird facilities provide an environment for extensive and intimate human-bird interaction such that humans associated with these facilities may be at greater risk for zoonotic disease transmission.