Dove Species Research Articles

New distribution and breeding location of the Stock Dove Columba oenas in Algeria

Abstract Algeria hosts seven species of the Columbidae family, including pigeons and doves, the majority of which have been the subject of numerous studies, but none have been conducted on the Stock Dove (Columba oenas). Data on this species are still scarce, and its distribution is limited only to Kabylie in northern Algeria. Species occurrence data were collected from September 2022 to August 2023 using the point count method. However, the species was recently recorded in several new localities (20 stations) in West Algeria, at Sidi Bel Abbès and Tlemcen. All our observations were made in a semi-arid bioclimatic area at an altitude ranging between 750 and 1,216 m. Nesting sites were located on woodland and forest edges, not far from water sources, and feeding sites were located in open, natural, or agricultural environments where cereal seeds, grasses, flower buds, and young green shoots were consumed. It could also cohabit with other species of pigeons and doves.

Trends in counts of Columbiformes at Shakpak Pass, Kazakhstan

Abstract. Bekzhan BT, Ivan FG, Andrey GE, Aizhan TE, Syrymgul ZKH. 2023. Trends in counts of Columbiformes at Shakpak Pass, Kazakhstan. Biodiversitas 24: 4661-4667. This study aims to determine the trends in counts of Columbiformes (pigeons and doves) at Shakpak Pass in Western Tien Shan (southern Kazakhstan). The analysis is based on long-term ringing data collected from 1966 to 2023, encompassing eight pigeon and dove species. The results reveal notable trends in the counts of Columbiformes over time, which can reflect changes in population sizes. Different species show different numbers in counts among different seasons. The Rock Dove population, predominantly non-migratory, displays no pronounced trend. The Stock Dove population has experienced a decline in recent years, yet it remains consistent throughout the entire research period. Counts of the Woodpigeon demonstrate an increasing trend during autumn migration, whereas the Yellow-eyed Pigeon exhibits a noteworthy decrease in both spring and autumn migrations. The Oriental Turtle Dove appears abundant during both spring and autumn migrations, with its count data exhibiting fluctuations devoid of any significant trend. The Laughing Dove is considered rare at Shakpak Pass, which makes determining a clear trend challenging; however, a negative trend is noted in autumn. Counts of the Turtle Dove have markedly decreased in both spring and autumn migrations, resulting in the species being nearly absent at Shakpak Pass since 2005. Regarding the Collared Dove, a non-migratory species, its abundance at Shakpak Pass is also limited. These findings provide valuable insights into the population trends of Columbiformes in Kazakhstan and highlight the importance of long-term monitoring and conservation efforts for these species.

A novel pathogenic avipoxvirus infecting oriental turtle dove (Streptopelia orientalis) in China shows a high genomic and evolutionary proximity with the pigeon avipoxviruses isolated globally.

Avipoxviruses are considered as significant viral pathogen infecting a wide range of domestic and wild bird species globally, yet the majority of avipoxviruses that infect the wild bird species remain uncharacterized and their genetic diversities remain unclear. In this study, we present a novel pathogenic avipoxvirus isolated from the cutaneous pox lesions of a wild oriental turtle dove (Streptopelia orientalis), tentatively named as turtle dovepox virus (TDPV). The avipoxvirus was isolated by using the chorioallantoic membranes of specific pathogen-free chicken embryos which showed characteristic focal pock lesions, followed by cytopathic effects in host cells infected with oriental turtle dovepox virus. An effort in sequencing the whole genome of the poxvirus using next-generation sequencing was given, and the first whole genome sequence of TDPV was obtained. The TDPV genome was 281,386 bp in length and contained 380 predicted open reading frames (ORFs). While 336 of the predicted ORFs showed homology to other characterized avipoxviruses, the other 44 ORFs were unique. Subsequent phylogenetic analyses showed that the novel TDPV shared the closest genetic evolutionary linkage with the avipoxviruses isolated from pigeon in South Africa and India, of which the TDPV genome had the highest sequence similarity (92.5%) with South African pigeonpox virus (FeP2). In conclusion, the sequenced TDPV is significantly different from any other avipoxviruses isolated from avian or other natural host species considering genomic architecture and observed sequence similarity index. Thus, it likely should be considered a separate species. IMPORTANCE Over the past few decades, avipoxviruses have been found in a number of wild bird species including the oriental turtle dove. However, there is no whole genome sequence information on avipoxviruses isolated from oriental turtle dove, leaving us unclear about the evolutionary linkage of avipoxviruses in oriental turtle dove and other wild bird species. Thus, we believe that our study makes a significant contribution because it is the first report of the whole genome sequence of TDPV isolated from a wild oriental turtle dove, which enriches the genomic information of the genus Avipoxvirus, furthermore, contributes to tracking the genetic evolution of avipoxviruses-infected oriental turtle dove species.

Quill mites of the family Syringophilidae (Acariformes: Prostigmata) parasitising doves of the genus Turtur (Columbiformes: Columbidae)

Mites belonging to the Syringophilidae family are a cosmopolitan and taxonomically diverse group of obligate and permanent parasites. These mites inhabit and reproduce within the hollow quills (calamus) of the wing, tail, and contour feathers. This study presents the first field observations of quill mites parasitising doves of the Turtur genus distributed in sub-Saharan Africa. A total of 145 host individuals from all five Turtur species (i.e., T. abyssinicus, T. afer, T. brehmeri, T. chalcospilos, and T. tympanistria) were examined during ornithological surveys conducted in Ghana, Uganda, Mozambique, and Nigeria. All examined bird species were found to be parasitised by a single oligoxenous syringophilid species, Meitingsunes tympanistria Skoracki & Dabert. Previously, this mite species had only been recorded from T. chalcospilos and T. tympanistria and from Tanzania and Togo; thus, the remaining dove species and countries of origin represent new host and locality records for this quill mite species. In our study, 20 individuals (13.8%) of the Turtur genus were infested by quill mites, with prevalence ranging from 8.8% to 24.2%. Mites were found to inhabit only the quills of wing coverts. No relationship was observed between the host body condition of two analysed host species (T. tympanistria and T. chalcospilos) and infestation by M. tympanistria. The fact that M. tympanistria exploits all representatives of the genus Turtur suggests that this mite species invaded these birds before their radiation, dating back approximately 15 Mya (Middle Miocene).

Population development of three sympatric dove species in African acacia savanna following a drought

The breeding densities of three dove species: Laughing Dove Spilopelia senegalensis, Ring-necked Dove Streptopelia capicola, and Mourning Collared Dove Streptopelia decipiens were studied by means of the territory mapping method in 400 ha of acacia savanna in northern Namibia. About half of the study area comprised cultivated fields, orchards, sport fields and human settlements. The study was conducted in February–June 2020, after a prolonged drought in 2017–2019. During the drought, most doves vacated their territories and ceased to breed, but breeding populations recovered rapidly. The overall population density of all species was the highest in February/March (30.3 pairs / 100 ha), intermediate in April (27.8), and lowest in May/June (23.5). Population densities were higher in the man-modified than in natural savanna. While the population densities in natural savanna significantly increased with the advance of the dry season, in man-modified savanna the densities decreased slightly.

Detection of Velogenic Avian Paramyxoviruses in Rock Doves in New York City, New York.

ABSTRACTAvian paramyxovirus 1 (APMV-1), also known as Newcastle disease virus (NDV), causes severe and economically important disease in poultry around the globe. Although a limited amount of APMV-1 strains in urban areas have been characterized, the role of the urban wild bird population as an APMV-1 reservoir is unclear. Because urban birds may have an important role for long-term circulation of the virus, fecal and swab samples were collected by community scientists from wild birds in New York City (NYC), New York, United States. These samples were screened for APMV-1 and genotypically characterized by sequencing of the complete genome. A total of 885 samples were collected from NYC parks and from a local wildlife rehabilitation clinic from October 2020 through June 2021, and 255 samples obtained from 197 birds have been processed to date. Eight birds (4.1%) screened positive for the APMV-1 nucleoprotein gene by conventional reverse transcription PCR (RT-PCR), and two live viruses were isolated via egg culture. A multibasic F protein cleavage sequence, 112R R K K R F117, an indicator of highly pathogenic velogenic APMV-1 strains, was present in the two samples fully sequenced by next generation sequencing. Phylogenetic analysis of the F gene coding sequence classified both isolates into genotype VI, a diverse and predominant genotype responsible for APMV-1 outbreaks in pigeon and dove species worldwide.IMPORTANCE Here we describe the first large-scale effort to screen for APMV-1 in New York City’s wild bird population as part of the New York City Virus Hunters program, a community science initiative. We characterized two isolates of APMV-1, with phylogenetic analyses suggesting diversity in established and circulating strains of pigeon paramyxoviruses. Our isolates are also domestic reference strains for future APMV-1 vaccine developments. Future surveillance in this region may contribute to our understanding of APMV-1’s evolution and genetic diversity, as well as inform poultry husbandry and vaccination practices in New York State.

BIOLOGY OF TUMBESIAN TERRESTRIAL BIRDS, WITH COMMENTS ON REGIONAL AVIAN CONSERVATION

The Tumbesian region of Peru and Ecuador, located within a global biodiversity hotspot, is home to a large number of endemic and little-known species. Endemic terrestrial birds (tinamous, cracids, and doves) are at increased risk of extinction due to restricted distribu-tion and exposure to habitat conversion. In this study, we used 24 camera traps in Cerros de Amotape National Park (northwestern Peru) to record terrestrial birds at three sites, each representing a different forest type: dry, evergreen, and transitional forests. After 4318 camera-days of results, we obtained 334 independent events of 23 species. We describe habitat association and daily and seasonal activity patterns for Crypturellus transfasciatus, Penelope purpurascens, and four dove species (Claravis pretiosa, Leptotila pallida, L. verreauxi, and L. ochraceiventris), with opportunistic anecdotes of breeding biology and behavior. We also provide a bird conservation assessment for the region. Our results are discussed and compared with the current knowledge of Tumbesian birds.

Genomic Evidence for Rare Hybridization and Large Demographic Changes in the Evolutionary Histories of Four North American Dove Species.

Simple SummaryRange expansions of invasive species continue to increase due to the direct or indirect influences of humans on global habitats. Understanding how these introductions and invasions increase the potential for interaction and hybridization between colonists and closely related native species is therefore increasingly important. We examine the evolutionary histories and signatures of hybridization among introduced feral Rock Pigeon and Eurasian Collared-Dove and native White-winged and Mourning doves in southwestern North America. Analyzing thousands of genomic markers, we find little evidence that hybridization has been extensive in their evolutionary histories or today. Despite this, evidence from multiple population genetics analyses supports the presence of six putative contemporary late-stage hybrids among the 182 sampled individuals. These putative hybrids all involve the most populous species, the Mourning Dove. We discuss the importance of using multiple marker types when attempting to infer complex evolutionary histories and propose important considerations when analyzing populations that were recently established or of domestic origins.Introductions and invasions provide opportunities for interaction and hybridization between colonists and closely related native species. We investigate this phenomenon using the mitochondrial DNA COI and 81,416 base-pairs of overlapping nuclear variation to examine the evolutionary histories and signatures of hybridization among introduced feral Rock Pigeon and Eurasian Collared-Dove and native White-winged and Mourning doves in southwestern North America. First, we report all four species to be highly divergent across loci (overall pair-wise species ΦST range = 0.17–0.70) and provide little evidence for gene flow at evolutionary timescales. Despite this, evidence from multiple population genetics analyses supports the presence of six putative contemporary late-stage hybrids among the 182 sampled individuals. These putative hybrids contain various ancestry combinations, but all involve the most populous species, the Mourning Dove. Next, we use a novel method to reconstruct demographic changes through time using partial genome sequence data. We identify recent, species-specific fluctuations in population size that are likely associated with changing environments since the Miocene and suggest that these fluctuations have influenced the genetic diversity of each dove species in ways that may impact their future persistence. Finally, we discuss the importance of using multiple marker types when attempting to infer complex evolutionary histories and propose important considerations when analyzing populations that were recently established or of domestic origins.

To get sick or not to get sick\u2014Trichomonas infections in two Accipiter species from Germany

Trichomonosis caused by the flagellate Trichomonas gallinae is one of the most important avian diseases worldwide. The parasite is localised in the oesophageal area of its host and mainly infects pigeon and dove species. During the last decade, a host expansion to passerine birds occurred, making the disease a potential threat for passerine predators as naïve host species. Here, we investigated the effect of the parasite on two Accipiter species in Germany which show a comparable lifestyle but differ in prey choice, the Northern goshawk (Accipiter gentilis) mainly hunting pigeons and the Eurasian sparrowhawk (Accipiter nisus) mainly feeding on passerines. We genetically identified the parasite strains using the Fe-Hydrogenase gene as marker locus and compared the incidence of parasite presence and clinical signs of trichomonosis between nestlings of the two Accipiter species. In total, we identified 14 strains, with nine strains unknown so far. There was a higher strain diversity and prevalence of Trichomonas spp. in goshawks than sparrowhawks (42.4% vs. 21.2%) whereas sparrowhawks when being infected more often displayed clinical signs of trichomonosis than goshawks (37.1% vs. 6.1%). Even though sparrowhawks were mainly infected with the finch epidemic strain and genetic data indicated some variation between isolates, no correlation with virulence could be detected. All in all, goshawks seem to be better adapted to Trichomonas infections, whereas to sparrowhawks, this is a novel disease with more severe manifestations, from individual morbidity to a higher risk of population decline caused by trichomonosis.

Avian response to prolonged drought in drylands: The case of two dove species in Brazil's semi-arid region

In view of the scenario of global warming, understanding how individuals disperse and populations fluctuate in response to climatic extremes is becoming increasingly important. Thereby, we used a capture-mark-recapture approach on Columbina minuta and Columbina picui in two Caatinga physiognomies (shrubby-woodland and savanna) during and following a prolonged drought in northeastern Brazil. We evaluated three hypotheses: density is higher in the savanna, doves are more abundant during the rainy season, and doves are able to undertake regional movements in response to drought. We used Huggins closed population models to estimate detection rates and population size. The results revealed low capture and recapture rates, greater abundance in the savanna, a higher density of C. minuta in both study areas, and a higher density of both species in the rainy season. We also observed that the prolonged drought has negatively impacted on doves density. The recovery of banded individuals at other sites indicates that nomadism may be the principal strategy adopted by doves to endure periods of drought. Our findings show that conservation units in the Caatinga are important to conservation of granivorous birds and contribute to understanding the birds' strategies to face seasonality and severely dry periods in semiarid areas.

Diel and Seasonal Variations of Vocal Behavior of the Neotropical White-Tipped Dove (Leptotila verreauxi)

Current knowledge regarding the vocal behavior in tropical non-passerines is very limited. Here, we employed passive acoustic monitoring to study the vocal activity of the white-tipped dove (Leptotila verreauxi) at three sites over a year in the Brazilian Pantanal. The diel pattern of vocal activity showed a bimodal pattern, with significantly higher vocal activity after sunrise than during the other hours of the day, in agreement with prior studies on this species and other members of Columbidae. The species was vocally active throughout the year, but vocal activity was maximum during May-June and lowest during January-February. Relative air humidity was positively associated with vocal activity, which may be related to the improvement of sound transmission under more humid conditions, but it could also be related to foraging efficiency due to a higher availability of invertebrates on wetter days. Vocal activity was not related to the mean air temperature or daily rainfall. Acoustic monitoring proved to be a useful tool for monitoring this shy forest species, for which a minimum number of three monitoring days was needed to detect a reliable vocal activity rate. Future studies should evaluate its use for monitoring other species of doves and pigeons that are secretive or threatened.

Nest Age as Predictor of Nest Survival in Three Sympatric Dove Species Breeding in a Mediterranean Arid Agroecosystem

Identifying the factors that influence nest survival insympatric species is important for the proper and effective management of their breeding populations. We used logistic-exposure models to estimate the daily survival rate and evaluate habitat traits, such as characteristics of trees supporting nests, position of nest in a tree, nesting micro- and macrohabitat, nest timing and weather, that may affect nest survival in Date Palm plantations in Biskra, Algeria. We monitored 68 Laughing Doves Spilopelia senegalensis, 65 Eurasian Collared Doves Streptopelia decaocto and 92 European Turtle Doves Streptopelia turtur nests during the 2019 breeding season. Our results showed that daily survival rate was positively associated with nest age for Laughing Dove and Eurasian Collared Dove, whereas a cubic trend was found for European Turtle Dove. Furthermore, daily survival rate of Laughing Doves was associated negatively with nest height and positively with distance to cereal crops. The beginning of the incubation phase is a critical period for nest survival in the three sympatric Columbidae species. However, in the European Turtle Dove, a second period of vulnerability was recorded between the end of the incubation phase and the beginning of the nestling phase, i.e. between day 11 and 18 of the 30-day nesting cycle. Overall, the highest daily survival rates were recorded for Laughing Doves (0.970 ± 0.006 SE) and European Turtle Doves (0.960 ± 0.005), whereas the lowest (0.937 ± 0.004) was found for Eurasian Collared Doves. Laughing doves and, to a lesser degree, European Turtle Doves are better adapted to conditions prevailing in North African Date Palm plantations. Nevertheless, to enhance dove reproduction, management focusing on ensuring the availability of food, water and suitable nesting trees should be undertaken.

Molecular Taxonomy and Phylogenetic Analysis of Dove and Pigeon Species (Aves: Columbidae) of Pakistan, Based on COI Region of Mitochondrial DNA

Doves and Pigeons are the members of living family Columbidae (Order: Columbiformes) having a wide range of taxonomic diversity and geographic distribution. Seven species with one sample each of family Columbidae were collected via random sampling from different districts of Pakistan to carry out this study. The targeted gene region was sequenced and identified by using BLAST tool at National Center for Biotechnology Information (NCBI). CLUSTALW was used for sequence alignment and MEGA6 for reconstruction of phylogenetic trees to predict the effective ancestry of different Columbidae species. The following phylogenetic trees were obtained i.e. Maximum Likelihood tree, Neighborhood joining tree, Maximum parsimony tree and UPGMA tree. In the current study, COI gene barcoding and phylogenetic analysis of family Columbidae gave results of multiple alignment which showed that Columba livia livia and Columba eversmanni, closely resembled as well as Spilopelia senegalensis and Streptopelia decaocta. While Streptopelia tranquebarica and Spilopelia chinensis have great affinity due to small clade difference and Treron phoenicoptera was distinctly related to other species due to large clade difference.

A comparative anatomy of the lingual apparatus of Indian doves (genus: Streptopelia and Stigmatopelia), Aves: Columbidae

BackgroundThe structure of the lingua of birds frequently gives some clue to the principal diet and manner of feeding of the species. The lingua is suitably modified for this purpose or does not intent the present work to understand it. The anatomical details of the lingual apparatus and their associated epidermal, musculature, and osteological elements of Indian doves (Aves: Columbidae) Eurasian collared dove (Streptopelia decaocto) and laughing dove (Stigmatopelia senegalensis) with comparison are lacking in the literature.ResultsA total of eight (n = 8/species) freshly preserved adult specimens with natural mortalities from Central Saurashtra, Western India, were examined. All the morphological features of species were observed in living as well as in preserved with the help of a pair of binoculars in the field and in the laboratory with stereo zoom dissecting microscope and camera lucida which are used for illustrations. The anatomical study includes the epidermal structures of the buccal region, lingua, apparatus hyobranchialis, and lingual muscles in relation to feeding behaviors and food. All these aspects are correlated with the food habits and finally with the muscles which bring about the suitable movements of the lingua.ConclusionThe lingua in Eurasian collared dove (Streptopelia decaocto) and laughing dove (Stigmatopelia senegalensis) studied here does not exhibit any wide variations in appearance as such. Although the comparison between the two dove species is reflected, a relation in diverse food habits and all the morphological variables do not reflect allometric consequences of selection on body size. Finally, the assumption appears intuitively right between morphology, food habits, and variable size of the food items and clears various microhabitat choices in adverse conditions.

Specialized Feathers Produce Sonations During Flight in Columbina Ground Doves.

The shape of remiges (primary and secondary feathers) is constrained and stereotyped by the demands of flight, but members of the subfamily of New World ground doves (Peristerinae) possess many atypical remex shapes with which they produce sonations of alarm. Within the genus Columbina specifically, the seventh primary feathers (P7) have elongated barbs that create a protrusion on the trailing vane which varies in size and shape between species. These feathers are hypothesized to have been coopted to produce communicative sounds (i.e., sonations) during flight, but the mechanism of this sound production is unknown. We tested the sound-producing capabilities of spread wing specimens from three species of ground doves (C. inca, C. passerina, and C. talpacoti) in a wind tunnel. High speed video and audio analyses indicated that all wings of adult birds produced buzzing sounds in the orientation and flow velocity of mid-upstroke. These buzzing sounds were produced as the protrusion of elongated barbs fluttered and collided with adjacent P6 feathers at a fundamental frequency of 200 and 400 Hz, respectively. Wings from juvenile C. inca produced significantly quieter buzzes and most (three of four individuals) lacked the elongated barbs that are present in adults. Buzzing sounds produced in the wind tunnel were similar to those produced by wild birds indicating that these P7 feathers have been coopted to produce acoustic signals (sonations) during flight. The shape and mechanism of sound production described here in Columbina appear to be unique among birds.

A molecular phylogenetic analysis of the genera of fruit doves and allies using dense taxonomic sampling

Fruit doves and their allies are a diverse group within the pigeon and dove family (Aves: Columbidae). Progress towards subfamilial classification of Columbidae relies on identifying major groups and the phylogenetic relationships within these groups. One such recently proposed group is the Raphinae based on previous evidence that the extinct dodo is potentially within what was formerly recognized as the Treroninae (fruit doves and allies). Although several studies have explored the phylogenetic relationships within Columbidae, most have focused either on broad-scale, familial level relationships or finer scale, species level relationships. Here we use mitochondrial and nuclear gene sequences from a diverse taxonomic sample to identify relationships among the genera and species of fruit doves and their allies. In particular our goal is to identify which of these genera should be included within Raphinae (the name which has taxonomic priority over Treroninae), focusing on an inclusive, well-supported monophyletic group. We also use dense taxon sampling to explore relationships among genera and species in this group, expanding on previous studies. In addition, we use resulting phylogenetic hypotheses to reconstruct the ancestral evolutionary history of foraging mode and biogeographic patterns of dispersal within the group. We used two data sets for our phylogenetic analysis: the first consisting of novel sequences generated for this project and the second with additional, previously published sequences from the fruit dove genus (Ptilinopus). Our analyses found support for the monophyly of a clade that contains a large fraction of the genera currently classified within Raphinae and also found several well-supported clades within this group of pigeons and doves. Character reconstruction methods based on the resulting phylogeny recover multiple transitions from a terrestrial to an arboreal foraging mode and evidence for multiple dispersal events from Asia to Africa throughout the history of the clade.

A survey of a mixed species aviary provides new insights into the pathogenicity, diversity, evolution, host range, and distribution of psittacine and passerine adenoviruses

ABSTRACTA Bourke’s parrot (Neopsephotus bourkii) originating from an aviary in Australia, containing two species of parrots, five species of finch and a species of dove, was presented for necropsy. The Bourke’s parrot died from gastritis caused by Macrorhabdus ornithogaster, but also had an interstitial nephritis and ureteritis with adenovirus-like inclusion bodies within collecting duct epithelial cells. The adenovirus causing the lesions was shown to be Psittacine adenovirus-2 (PsAdV-2) using a PCR assay specific for adenoviruses and sequencing of amplicons. A survey of droppings from other birds in the aviary using the same PCR assay with amplicon sequencing found a high prevalence of infection of PsAdV-2 in Bourke's and scarlet-chested parrots (Neophema splendida). PsAdV-2 was also present in droppings from a Namaqua dove (Oena capensis). Gouldian finches (Erythrura gouldiae), red-billed firefinches (Lagonosticta senegala), and red-throated parrot finches (Erythrura psittacea) were shedding Gouldian finch adenovirus-1 (GFAdV-1). Two novel adenoviruses, an atadenovirus and a siadenovirus, were detected in the droppings from long-tailed finches (Poephila acuticauda). Kidney tissue from three of four scarlet-chested parrots submitted for necropsy from a second aviary were also positive for PsAdv-2. These findings and previously reported findings of widespread PsAdv-2 infection in captive orange-bellied parrots (Neophemia chrysogaster) raise the possibility that PsAdV-2 is enzootic in Australian aviculture. This represents the first report of GFAdV-1 in Australia and first identification of infection in finch species other than the Gouldian finch. Identification of two novel adenoviruses in long-tailed finches suggests that other novel adenoviruses are circulating in other finch species.RESEARCH HIGHLIGHTSPsittacine adenovirus-2 was present in high prevalence in two Australian aviaries.Gouldian finch adenovirus-1 (GFAdV-1) was detected in Australia for the first time.The host range of GFAdV-1 host range was expanded to other finch species.Novel atadenovirus and siadenovirus were detected in Estrildid finches.

Habitat use by the invasive exotic Eurasian Collared-Dove (Streptopelia decaocto) and native dove species in the Chamela-Cuixmala region of West Mexico

Habitat use by the invasive exotic Eurasian Collared-Dove (Streptopelia decaocto) and native dove species in the Chamela-Cuixmala region of West Mexico

New records of chewing lice (Phthiraptera: Amblycera, Ischnocera) from Egyptian pigeons and doves (Columbiformes), with description of one new species

Little information is available about the chewing lice of wild birds of Egypt, including common groups such as pigeons and doves (Columbiformes). Through this work, parasitic chewing lice of common columbiformes of Egypt were revised including new data. Three species of pigeons and doves (Streptopelia decaocto Frivaldszky 1838, Spilopelia senegalensis Linnaeus 1766 and Columba livia Gmelin 1789) were examined for chewing lice at three different localities. A total of 124 specimens of lice were collected. Nine species were identified from these samples; one species (Columbicola joudiae n. sp.) was considered a new species to science, six species were recorded from Egypt for the first time, and two species have been identified in Egypt before. Taxonomic and ecological remarks for all identified chewing lice samples are provided along with known and local hosts, measurements and material examined. Description and images of the new species are also provided.

Whole-body 3D kinematics of bird take-off: key role of the legs to propel the trunk.

Previous studies showed that birds primarily use their hindlimbs to propel themselves into the air in order to take-off. Yet, it remains unclear how the different parts of their musculoskeletal system move to produce the necessary acceleration. To quantify the relative motions of the bones during the terrestrial phase of take-off, we used biplanar fluoroscopy in two species of birds, diamond dove (Geopelia cuneata) and zebra finch (Taeniopygia guttata). We obtained a detailed 3D kinematics analysis of the head, the trunk and the three long bones of the left leg. We found that the entire body assisted the production of the needed forces to take-off, during two distinct but complementary phases. The first one, a relatively slow preparatory phase, started with a movement of the head and an alignment of the different groups of bones with the future take-off direction. It was associated with a pitch down of the trunk and a flexion of the ankle, of the hip and, to a lesser extent, of the knee. This crouching movement could contribute to the loading of the leg muscles and store elastic energy that could be released in the propulsive phase of take-off, during the extension of the leg joints. Combined with the fact that the head, together with the trunk, produced a forward momentum, the entire body assisted the production of the needed forces to take-off. The second phase was faster with mostly horizontal forward and vertical upward translation motions, synchronous to an extension of the entire lower articulated musculoskeletal system. It led to the propulsion of the bird in the air with a fundamental role of the hip and ankle joints to move the trunk upward and forward. Take-off kinematics were similar in both studied species, with a more pronounced crouching movement in diamond dove, which can be related to a large body mass compared to zebra finch.