Dove Streptopelia Decaocto Research Articles

The colourful journey of the Eurasian Collared Dove Streptopelia decaocto

In the 18th and 19th centuries the Eurasian Collared Dove Streptopelia decaocto was widely considered to be the wild ancestor of the domesticated Barbary Dove (domestic S. risoria), and even following its recognition as a species its taxonomic status was a source of confusion. Since 1900, and the species' massive geographic expansion (both naturally and by introduction) the two taxa have occasionally met. The resultant hybridisation is probably the cause of the large number of Eurasian Collared Doves with the aberrant pale colour of Barbary Doves in areas where hybridisation has occurred.

Sex and age differences in the diet of the Eurasian Sparrowhawk (Accipiter nisus) using web‐sourced photographs: exploring the feasibility of a new citizen science approach

Diet differences between the sexes and ages have often been recorded for bird species. Many raptor species show extreme sexual size dimorphism, with females often considerably larger than the males and these differences may be reflected in their diets. Diet studies in raptors most frequently focus on analysing prey remains or pellets collected at nest‐sites. These methods are subsequently limited to breeding birds in the breeding season and are also restricted by their inability to distinguish prey items between the sexes. The use of web‐sourced photographs to examine raptor diet has the potential to overcome some limitations of more traditional methods used to assess diet. We used this approach for the Eurasian Sparrowhawk Accipiter nisus in the United Kingdom, exploring diet between the sexes and ages throughout the entire year. In total, we obtained 843 web‐sourced photographs of Sparrowhawks with their prey items. There were 12 key prey items that had a frequency ≥ 10 in the Sparrowhawk diet: Common Wood Pigeon Columba palumbus, Common Starling Sturnus vulgaris, Eurasian Collared Dove Streptopelia decaocto, Rock Dove Columba livia, Common Blackbird Turdus merula, House Sparrow Passer domesticus, unidentified ‘small’ and ‘medium’ birds, European Goldfinch Carduelis carduelis, European Greenfinch Chloris chloris, Eurasian Blue Tit Cyanistes caeruleus and Stock Dove Columba oenas. Several prey species were more often seen in the diet of one sex or age group. Overall, average prey weights of adult females were two and a half times heavier than for adult males and one and a half times heavier for juvenile females. However, this method may be slightly biased towards larger prey items, which should be considered in future studies. Despite this limitation, our method enabled dietary differences between the sexes and ages of this highly sexual size dimorphic raptor species to be explored throughout the year.

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.

Persistence of a feeding innovation in Eurasian Collared Doves Streptopelia decaocto despite its disappearance from its original site

Persistence of a feeding innovation in Eurasian Collared Doves Streptopelia decaocto despite its disappearance from its original site

Comparative morphological and histological study of the pecten oculi in two species of Iraqi birds (Falco tinnunculus L. and Streptopelia decaocto F.)

Study showed structure of pecten oculi in the Kestrel Falco tinnunculus L.wasPleated type and consisted of 17 folds which were thick. While in the Collared DoveStreptopelia decaocto F. was Vaned type and consisted of 13 folds and it describedthin. The illustrated histological study of pecten oculi folds in the Kestrel and theCollared Dove was composed of large number of capillaries, large blood vessels andpigment cells which were few in Kestrel compare with the Collared Dove. The bridgein the Kestrel and the Collared Dove pecten oculi was consisted of connective tissue,many pigment cells, and contains on little capillaries and it linked the membrane tothe internal limiting membrane of the retina in the Kestrel.Key words: birds, pecten oculi, morphology, histology

Comparative morphological and histological study of the pecten oculi in two species of Iraqi birds (Falco tinnunculus L. and Streptopelia decaocto F.)

Study showed structure of pecten oculi in the Kestrel Falco tinnunculus L.wasPleated type and consisted of 17 folds which were thick. While in the Collared DoveStreptopelia decaocto F. was Vaned type and consisted of 13 folds and it describedthin. The illustrated histological study of pecten oculi folds in the Kestrel and theCollared Dove was composed of large number of capillaries, large blood vessels andpigment cells which were few in Kestrel compare with the Collared Dove. The bridgein the Kestrel and the Collared Dove pecten oculi was consisted of connective tissue,many pigment cells, and contains on little capillaries and it linked the membrane tothe internal limiting membrane of the retina in the Kestrel.Key words: birds, pecten oculi, morphology, histology

English

The present paper includes a study of color variation in Iraqi Collared dove Streptopelia decaocto. Three different populations have been recognized: the southern population which belongs to the Indian race, the northern population to the Eurasian race; the dark and light color variation occurs in the Baghdad population because of hybridisation between the two races, found infected with two cestodes, Raillietina echinobothrida found in most of our specimens, while the dark face found beside R. echinobothrida infected with Idiogenes sp. getting it probably from vertebrate sources. We believe that most of the Baghdad population was intermediate between north and south races. Reduction of population density of this dove in Baghdad area was caused by diseases, hybridization and competition.

A REVIEW OF THE INVASIVE EURASIAN COLLARED DOVE AND POSSIBLE RESEARCH METHODS IN THE FUTURE

The Eurasian Collared Dove Streptopelia decaocto is one of the most successfuly expanding vertebrate species in the world; therefore, it has attracted special scientific focus. This review summarises the species’ achievements related to its rapid expansion and the ecological consequences with regard to the population genetic assessments. It also highlights the expansion dynamics of the species and the ecosystems to which it is most adapted. Finally, the effects of this species on the newly colonised ecosystems are illustrated. The study of the genetic structure between populations to make inferences about expansion dynamics has been neglected so far. Thus, we survey the opportunities of using molecular markers for genetic analysis in populations of Eurasian Collared Dove as a possible means for future studies. This work is important given the lack of information on the mentioned fields, and it calls attention to the importance of further interdisciplinary studies from different scientific fields using this species. .

A comparative study to determine the nature of the eye lens protein in the two types of birds Iraqi

The study showed significant differences between the average weight lens and the average amount protein in the lens between that Kestrel Falco tinnunculus L. and the Collared Dove Streptopelia decaocto F. , also the study electrical migration of lens proteins having one bundle of crystalline –? in Kestrel compared with three bundles in Collared Dove, two bundles of crystalline – ? in both , and crystalline – ? appeared as one bundle in both birds.

A comparative study to determine the nature of the eye lens protein in the two types of birds Iraqi

The study showed significant differences between the average weight lens and the average amount protein in the lens between that Kestrel Falco tinnunculus L. and the Collared Dove Streptopelia decaocto F. , also the study electrical migration of lens proteins having one bundle of crystalline –? in Kestrel compared with three bundles in Collared Dove, two bundles of crystalline – ? in both , and crystalline – ? appeared as one bundle in both birds.

Philip Arthur Dominic Hollom (1912-2014)

Philip Arthur Dominic Hollom (1912-2014)

Breeding biology of domesticated Eurasian Collared Dove (Columbidae) Streptopelia decaocto Frivaldszky 1838 in Saidpur, Bangladesh

Two pairs of domesticated Eurasian Collared Dove Streptopelia decaocto reared at eighteen months for its breeding performance in intensive system. One pair was homozygous albino al//al x al//al and another pair was one wild type +//al and another albino al//al. Another experimented four pairs of doves were produced from these two pairs. Out of six pairs total 114 squabs were produced during the research period. Total three albino pairs produced 100% albino squab and different coloured male and female produced different colours which were 50% each. Sex ratio of male and female were observed 1:1. Experimental doves were reared in cages measures 23x20x16 and 25x22x18 inches and feed were supplied all day long with wheat, corn, mustard, broken rice and burnt soil. Intake feed were 15 gram per dove in a day. During the time of this observation only hypervitaminosis and worm infestations were observed and the mortality rate was few. Only in one pair (rosy ? x wild type ?) produced 11 male (46%) and 13 female (54%) out of 24 squabs; this was slightly exceptional. In total 114 squabs from six pairs only one rosy male and pied rosy female were found. Breeding record of this research suggests that the colour patterns are first wild type then rosy and finally albino gradually.DOI: http://dx.doi.org/10.3126/ije.v3i2.10571 International Journal of the Environment Vol.3(2) 2014: 48-54

Bird Species Diversity of the Mitidja Plain (Northern Algeria) with Emphasis on the Dynamics of Invasive and Expanding Species

Abstract This treatise investigates the poorly studied bird fauna of Mitidja Plain (Northern Algeria), with particular notes on the occurrence and expansion of new and alien species. Direct observations, supported by ornithological surveys carried out by Progressive Frequential Sampling (PFS), a version of a point count method, have allowed us to identify 125 bird species. These represent 31% of all species known from Algeria. The species recorded belong to 14 orders, 39 families and 37 genera. According to their biogeographic origins, 36 are Mediterranean, 32 Palearctic, 24 Holarctic, 17 European and 16 of European-Turkestani origin. The Mitidja Plain holds 60 resident-breeder species (48% of all registered species) and is a transit zone for many migratory species (summer and winter migrants constituting 20% and 14% of the total, respectively) and occasional visitors (RA = 12%). Among recently expanding species (introduced or local), the Collared Dove Streptopelia decaocto and Wood Pigeon Columba palumbus, sampled by the spot-mapping method, experienced a very rapid population growth. The first observations of the former were made in 1996 in Algiers. Its numbers experienced a steep increase after 2002, starting from 5.75 pairs/10 ha to reach up to 31.5 pairs/10 ha in 2006. The same applies for the Rose-ringed Parakeet Psittacula krameri, surveyed by direct-count at roosting sites. This species has been able to increase and reproduce since its first introduction into the wild in 1996. The increase in study species populations, especially the Rose-ringed Parakeet, may derive from good weather conditions that favoured the species through providing better feeding conditions, thus high reproduction outcomes.

Primer informe de leucismo en la paloma de collar Streptopelia decaocto (Columbiformes), especie exótica en México

La paloma de collar, Streptopelia decaocto, es una especie originaria del Paleártico occidental, introducida en México. El leucismo es una pérdida parcial de pigmentación. Aquí informamos del primer individuo leucístico en México, visto en El Rosario de Abajo, Ensenada, Baja California, México, el 29 de noviembre del 2009 (30°02’24” N y 115°44’24” W).

Potential impact of grey squirrels Sciurus carolinensis on woodland bird populations in England

Several woodland bird species have declined markedly in abundance in England over the past 40 years, whilst the grey squirrel Sciurus carolinensis, a non-native nest predator, has increased. Given the timing, there has been concern that grey squirrels have driven these declines, although there is little data to support this view. Using novel analytical methods and extensive national bird and grey squirrel monitoring data, we examine whether there is evidence that woodland bird populations in England have been depressed by grey squirrels and whether there is a relationship between nest failure and squirrel numbers. Our results indicate that grey squirrels are very unlikely to have driven observed declines of woodland birds in recent years, although the number of associations, positive as well as negative, between grey squirrels and woodland birds is greater than expected by chance. For this reason, we cannot exclude the possibility that the populations of a small number of bird species, principally increasing species, have been depressed to some degree at sites where a greater number of grey squirrels were present. Of these species, perhaps the most convincing evidence is for Common Blackbird Turdus merula and Eurasian Collared Dove Streptopelia decaocto where nest record data also identified a positive relationship between nest failure at the egg stage and squirrel abundance.

Responses of great reed warblersAcrocephalus arundinaceusto experimental brood parasitism: the effects of a cuckooCuculus canorusdummy and egg mimicry

Egg rejection behaviour towards parasitic eggs was studied in a great reed warblerAcrocephalus arundinaceuspopulation in central Hungary, which was heavily (about 65%) parasitised by the common cuckooCuculus canorus. Clutches were experimentally parasitised during the egg‐laying period with artificial, moderately mimetic cuckoo eggs or with conspecific eggs that were good mimics of the hosts' eggs. Great reed warblers rejected 76.2% of the artificial cuckoo eggs, mainly by ejection, but accepted most of the conspecific eggs (87.5%). Cuckoo eggs in naturally parasitised clutches were rejected at a lower rate (32%). When, in addition to the egg mimicry experiments, a stuffed cuckoo was placed near the nest, accompanied by the recording of a female cuckoo call, hosts' rejection rate of the artificial cuckoo egg increased from 76% to 96%. The sight of the cuckoo, on the other hand, did not influence host's rejection behaviour when a conspecific egg was used in the experiment. A stuffed collared doveStreptopelia decaocto, accompanied by its call, was used as a control, and did not cause any increased rejection. Great reed warblers were more aggressive towards the cuckoo than to the dove dummy. When the cuckoo eggs in naturally parasitised clutches were exchanged with artificial cuckoo eggs, we observed no increase in the rejection rate. We conclude that great reed warblers in our heavily parasitised population are capable of detecting brood parasitism in their clutch by identifying the parasitic egg. The efficiency of this identification depends mainly on the mimicry of the foreign egg. The sight of the cuckoo at the nest may increase rejection rate by stimulus summation, and this conditional effect is mainly affected by the degree of mimicry of the parasitic egg.

The spread of the Collared Dove Streptopelia decaocto in Europe: colonization patterns in the west of the Iberian Peninsula

Capsule The pattern and timing of spread are examined, particularly in Extremadura, and theories on speed and extent of spread and possible competition with related species are discussed. Aims To describe the present pattern of the spread of the Collared Dove in one of the few areas in Europe where the process is still active, in the light of the hypothesis of general expansion in Europe. Methods Information was obtained from field data collected in 1996–97 and from responses by local observers to a questionnaire. We recorded data on the presence in localities, numbers of birds, extent of colonization, date the first birds were sighted, and confirmed nesting. Results The first settlements in Extremadura were observed less than ten years ago. The timing indicates that the process of expansion in Extremadura is now at a stage of full development, enabling us to study the mechanism involved. The colonization shows a clear northwest–southeast direction to the interior from coastal areas of Iberia. The species first established itself in urban-areas, from which it slowly but steadily expanded towards rural areas. Conclusions The expansion of the species has been very rapid, and is still active in Extremadura. The colonization pattern shows a clear directionality (northwest–southeast), beginning with urban nuclei, followed by expansion into rural areas.

Short notes: Melanistic Eurasian Collared Dove Streptopelia decaocto in Morocco

Short notes: Melanistic Eurasian Collared Dove Streptopelia decaocto in Morocco

Cutaneous water evaporation—I. Its significance in heat-stressed birds

1. 1. In a comparative study on avian cutaneous evaporation, two species of Phasianidae, Japanese quail Coturnix coturnix japonica and chukar partridge Alectoris chukar, and three species of Columbidae, palm dove Streptopelia senegalensis, collared turtle dove Streptopelia decaocto and rock pigeon Columba livia, were investigated. 2. 2. The skin resistance to vapor diffusion ( r s and cutaneous water loss (CWL) were studied in these birds exposed to air temperatures ( T a ) between 20 and 52°C. The skin resistance was measured with Lambda instrument diffusive resistance meter. 3. 3. Skin resistance within the thermo-neutral zone varied between a minimum of 62 sec/cm in the palm dove exposed to 20°C and a maximum of 309.1 sec/cm in the partridge exposed to 36°C. The CWL values were 2.5 mgH 2O/cm 2·hr and 0.51 mg H 2O/cm 2hr respectively. 4. 4. Maximum CWL of the quail and partridge was 1.9–2.1 mg H 2O/cm 2·hr, equivalent to a cooling capacity of about 17% of metabolic heat production at 45°C T a. In the palm dove, collared dove and pigeon CWL reached 6.8, 13.1 and 20.9 mg H 2O/cm 2·hr and r s, values reached 31.2, 16.2 and 9.4sec/cm respectively. The cooling capacity amounted to 51.5, 86.1 and 96.5% of metabolic heat during heat stress (52°C). 5. 5. The significance of skin evaporation in body temperature regulation of heat-stressed birds is discussed.