Streptopelia Decaocto Research Articles

Comparative Morphological and Histochemical Study of Esophagus, in Eurasian Collared Dove (Streptoplia decaocto) and Buzzard (Beuteo beuteo vulpinus)

The study carried out on 28 esophagus specimens of healthy, 14 Eurasian Collared Dove (Streptoplia decaocto) and 14 Buzzard (Beuteo beuteo vulpinus). The aimed, to study the esophagus's morphological also histological. The lumen of esophagus in dove appear narrower and shorter in length than Buzzard as well as the crop as well-developed sac , while the crop in buzzard as longitudinal narrow spindle dilation ,and the present research work was done on the histology and histochemistry of the esophagus in dove and buzzard and found that the esophagus was composed of three segment cervical, crop and thoracic ,histologically, the mucosa of cervical, thoracic part was lined by non-keratinized layer of stratified squamous cells. As well as The esophageal glands were absent in cervical part and crop in dove, whereas in the thoracic part these glands were present and their duct open toward the lumen of the esophagus. The mucosal folds well developed in the cervical portion. Histochemically, the epithelium gland of esophagus showed PAS positive reaction that indicated presence of neutral mucopolysaccharides, the esophageal glands showed strong moderate reaction by (PAS)in cervical and thoracic esophagus as well as in thoracic part in dove. Conclusion the results showed that esophagus was significantly different Morphological and histological between two birds.

Comparative Morphometrical Study of Proventriculus and Gizzard in Eurasian Collared Dove (Streptoplia decaocto) and Buzzard (Beuteo beuteo vulpinus)

Comparative Morphometrical Study of Proventriculus and Gizzard in Eurasian Collared Dove (Streptoplia decaocto) and Buzzard (Beuteo beuteo vulpinus)

Where Are We Going Now? The Current and Future Distributions of the Monk Parakeet (Myiopsitta monachus) and Eurasian Collared Dove (Streptopelia decaocto) in a Megalopolis

The monk parakeet (Myiopsitta monachus) and the Eurasian collared dove (Streptopelia decaocto) are two of the most prevalent invasive species globally due to their high dispersal ability. Since these birds were first recorded (1999 for the monk parakeet and 2013 for Eurasian collared dove) in the Mexico City Metropolitan Area (MCMA), both species have spread rapidly throughout the area. However, the impacts of global climate changes on the distribution patterns of these species remain poorly studied across the MCMA. Therefore, based on an ecological niche modeling approach, we assessed the expansion and potential invasion of both species in this megalopolis using current and future climate projections (year 2050). Our results estimated that the current suitable areas are 5564 km2 for the monk parakeet and 5489 km2 for the Eurasian collared dove, covering ~70% of the study area, suggesting a rapidly invading species, as expected. We observed a slight decrease (up to 24%) in both species in future climate scenarios, but our models estimated that the sizes of the suitable areas would remain stable. We found that the range expansion of these species in the megalopolis may be largely attributed to their propensity for jump dispersion and short-time niche expansion ability. Our findings allow for a better understanding of the factors contributing to the range expansion of the monk parakeet and the Eurasian collared dove in Mexico and can better inform the monitoring guidelines for and assessments of these invasive species.

Mitochondrial Genomes of Streptopelia decaocto: Insights into Columbidae Phylogeny.

In this research, the mitochondrial genome of the Streptopelia decaocto was sequenced and examined for the first time to enhance the comprehension of the phylogenetic relationships within the Columbidae. The complete mitochondrial genome of Streptopelia decaocto (17,160 bp) was structurally similar to the recognized members of the Columbidae family, but with minor differences in gene size and arrangement. The structural AT content was 54.12%. Additionally, 150 mitochondrial datasets, representing valid species, were amassed in this investigation. Maximum likelihood (ML) and Bayesian inference (BI) phylogenetic trees and evolutionary time relationships of species were reconstructed based on cytb gene sequences. The findings from the phylogenetic evaluations suggest that the S. decaocto was classified under the Columbinae subfamily, diverging from the Miocene approximately 8.1 million years ago, indicating intricate evolutionary connections with its close relatives, implying a history of species divergence and geographic isolation. The diversification of the Columbidae commenced during the Late Oligocene and extended into the Miocene. This exploration offers crucial molecular data for the S. decaocto, facilitating the systematic taxonomic examination of the Columbidae and Columbiformes, and establishing a scientific foundation for species preservation and genetic resource management.

Characterizing the domestic-wild bird interface through camera traps in an area at risk for avian influenza introduction in Northern Italy

Direct or indirect interactions between sympatric wildlife and poultry can lead to interspecies disease transmission. Particularly, avian influenza (AI) is a viral epidemic disease for which the poultry-wild bird interface shapes the risks of new viral introductions into poultry holdings. Given this background, the study hereby presented aimed to identify wild bird species in poultry house surroundings and characterize the spatiotemporal patterns of these visits. Eight camera traps were deployed for a year (January to December 2021) in three commercial chicken layer farms, including free-range and barn-type setups, located in a densely populated poultry area in Northern Italy at high risk for AI introduction via wild birds. Camera traps’ positions were chosen based on wildlife signs identified during preliminary visits to the establishments studied. Various methods, including time series analysis, correspondence analysis, and generalized linear models, were employed to analyze the daily wild bird visits. A total of 1,958 camera trap days yielded 5,978 videos of wild birds from 27 different species and 16 taxonomic families. The animals were predominantly engaged in foraging activities nearby poultry houses. Eurasian magpies (Pica pica), ring-necked pheasants (Phasianus colchicus) and Eurasian collared doves (Streptopelia decaocto) were the most frequent visitors. Mallards (Anas platyrhynchos), an AI reservoir species, were observed only in a farm located next to a fishing sport lake. Time series analysis indicated that wild bird visits increased during spring and winter. Farm and camera trap location also influenced visit frequencies. Overall, the results highlighted specific species that could be prioritized for future AI epidemiological surveys. However, further research is required to assess their susceptibility and infectivity to currently circulating AI viruses, essential for identifying novel bridge hosts.

Comparative Physiological Study of Pancreas in Eurasian Collared Dove (Streptopelia Decaocto) and Buzzard (Beuteo Beuteo Vulpinus)

Comparative Physiological Study of Pancreas in Eurasian Collared Dove (Streptopelia Decaocto) and Buzzard (Beuteo Beuteo Vulpinus)

Assessing the importance of landscape, anthropogenic and spatial factors in predicting urban nesting sites: the Columbidae of the city of Rabat (Morocco) as a case study

Abstract To adequately control the urban bird populations, the determinants of nest habitat selection must be identified and its processes well understood. In this study, we investigated this issue with regard to Columba palumbus (WP) and Streptopelia decaocto (CD) in the city of Rabat, Morocco. We used data from landscape composition, anthropogenic presence, and spatial structure, to identify the best predictors that cause variation in the CD (84 nests) and WP (141) nest occurrence using generalized linear mixed models and variation partitioning analyses (VP). Our results show that WP nest occurrence was positively associated with urban park cover and long distances to agricultural areas and negatively with short distances to roads. Significant interactions between the average noise intensity and the number of passers-by/5 min and between maximum NDVI and density of roads also explain WP nest occurrence. In CD, the nest occurrence was positively associated with covers of built-up areas and parks, the density of roads, and average noise intensity, and negatively with short distances to roads and the number of passers-by/5 min. The VP revealed that the joint effect of landscape composition and space was the most robust in explaining the WP nests occurrence, whereas the pure fraction of space and the joint effect of human presence and space were the most robust in CD. As CD and WP nest in several Mediterranean cities, it would be worthwhile to test the generality of our results using the same analytical approach in other urban areas.

Riverine forest as a significant habitat to harbor a wide range of bird species.

Riverine forests are unique and highly significant ecosystems that are globally important for diverse and threatened avian species. Apart from being a cradle of life, it also serves as a gene pool that harbors a variety of flora and fauna species (repeated below). Despite the fact, this fragile ecosystem harbored avian assemblages; it is now disappearing daily as a result of human activity. Determining habitat productivity using bird species is critical for conservation and better management in the future. Multiple surveys were conducted over a 15-month period, from January to March 2019, using the distance sampling point count method. A total of 250 point count stations were fixed systematically at 300 m intervals. In total, 9929 bird individuals were recorded, representing 57 species and 34 families. Out of 57 bird species, two were vulnerable, one was data deficient, one was nearly threatened, and the remaining 53 species were of least concern. The Eurasian Collard Dove - Streptopelia decaocto (14.641 ± 2.532/ha), White-eared Bulbul - Pycnonotus leucotis (13.398 ± 4.342/ha) and Common Babbler - Turdoides caudata (10.244 ± 2.345/ha) were the three first plenteous species having higher densities. However, the densities of three species, i.e., Lesser Whitethroat - Sylvia curruca, Gray Heron - Ardea cinerea and Pallas Fish Eagle - Haliaeetus leucoryphus, were not analyzed due to the small sample size. The findings of diversity indices revealed that riverine forest has harbored the diverse avian species that are uniformly dispersed across the forest. Moreover, recording the ten foraging guilds indicated that riverine forest is rich in food resources. In addition, the floristic structure importance value index results indicated that riverine forest is diverse and rich in flora, i.e. trees, shrubs, weeds and grass, making it an attractive and productive habitat for bird species.

Uso da deslorelina no tratamento dos distúrbios reprodutivos em rola-turca (Streptopelia decaocto) – relato de caso

Reproductive changes are a common issue in the clinical management of domestically raised birds. Typically, these alterations result from inadequate environmental and dietary management, as well as inappropriate interactions between humans and their birds. Adjusting the environmental and dietary management is crucial for correcting these problems. However, in chronic and recurrent cases such as chronic oviposition and refractory prolapses, the use of medical therapy, hormonal treatments or surgery may be necessary. This study reports the results obtained from treating a female bird of the species Eurasian Collared-Dove (Streptopelia decaocto), which, after experiencing chronic egg-laying episodes, suffered from a prolapse of the oviduct and cloaca, leading treatment through oviductectomy combined with the use of the hormonal implant Suprelorin®.

Invasion dynamics of the European Collared-Dove in North America are explained by combined effects of habitat and climate

Abstract Global biodiversity is increasingly threatened by the spread of invasive species. Understanding the mechanisms influencing the initial colonization and persistence of invaders is therefore needed if conservation actions are to prevent new invasions or strive to slow their spread. The Eurasian Collared-Dove (Streptopelia decaocto, EUCO) is one of the most successful avian invasive species in North America; however, to our knowledge, no study has simultaneously examined the role that climate-matching, human activity, directional propagation, and local density have in this invasion process. Our research expands upon a cellular-automata-based hierarchical model developed to assess directional invasion dynamics to further quantify the impacts of climate, elevation, and land cover type on the spread of EUCO in North America. Our results suggest that EUCO’s dispersal patterns can largely be explained by the effects of habitat, climate, and environmental conditions at different stages of the invasion process rather than some innate preferred north-westerly spread. Specifically, EUCO initially colonized warm and wet grassland habitats and tended to persist in urban areas. We also found that while EUCO were more likely to spread to the northeast of existing habitats, directional preference did not drive persistence and recolonization events. These findings highlight the importance of incorporating both neighborhood effects and environmental factors in the modelling of range-expanding species, adding to the toolset available to researchers to model invasive species spread. Further, our research demonstrates that historical records of invasive species occurrences can provide the data resources needed to disentangle the characteristics driving species invasion and enable predictions that are of critical importance to resource managers.

DNA barcodes of Saudi Arabian birds: Implications for species identification and diversity analysis

ObjectivesDNA barcoding using cytochrome c oxidase I (COI) gene is an effective tool for species identification with additional power of measuring molecular diversity and phylogenetic inference. In this study, we evaluated the performance of COI gene sequences for species identification and molecular diversity analysis of some Saudi Arabian birds. MethodsWe sequenced the 694 base pair segment of COI gene from 5 samples of white cheeked bulbul (Pycnonotus leucogenys), 4 samples of black scrub robin (Cercotrichas podobe), and 2 samples of crested lark (Galerida cristata), all belonged to the same Order. We also included all the COI sequences available in the GenBank for these birds with the aim of studying molecular diversity across geographies. For species identification, we enriched our dataset by including COI barcodes of other Saudi Arabian bird species, including Arabian partridge (Alectoris melanocephala), houbara bustard (Chlamydotis undulata macqueenii), green bee-eater (Merops orientalis), laughing dove (Streptopelia senegalensis), namaqua dove (Oena capensis) and collared dove (Streptopelia decaocto), representing different genera. ResultsWhite-cheeked bulbul from Saudi Arabia showed more diversity than the same birds from Iraq. The mean nucleotide difference and nucleotide diversity were 5.20 and 0.009 respectively with as Tajima’s D score of 1.6549 indicating the scarcity of rare alleles. The specimens of black scrub robin from Saudi Arabia and Djibouti showed mixed phylogeny with only two segregating sties and a near zero Tajima’s D score indicating no major selection. Out of 18 samples of crested lark, 13 birds from 4 different geographical regions showed identical sequences, while 3 birds from Russia and 1 from Cyprus grouped in a separate cluster and 1 crusted lark from Djibouti differed from all. The mean nucleotide difference and nucleotide diversity were 0.6993 and 0.0014, while a negative Tajima’s D of −1.1956 indicated the presence of rare alleles. Phylogenetic analysis of 9 different species of Saudi Arabian birds showed the discriminatory power of COI barcodes as all the different species grouped separately in specific clusters. ConclusionsCOI barcodes are not only indispensable tools for species identification but can also be used for analyzing molecular diversity and phylogenetic inference.

Morphometry and food preference in relation to sex and hematological values of Eurasian collared dove (Streptotella decaocto).

The study investigated the gut content and recorded morphometric and hematological parameters in the Eurasian collared dove (Streptopelia decaocto). 24 samples of healthy birds (12 from each sex) were collected from different wetlands in Punjab, Pakistan, from December 2022 until February 2023. Birds were captured live for blood samples, morphometric, and gut analyses. The current study revealed that mensural measurements showed no significant differences in all parameters except tail length, which was significantly longer in males (14.59 ± 0.30) compared to females (12.88 ± 0.43). Hematological parameters were hemoglobin, 23.95 gm/dl; red blood cells, 3.97 × 106/μl; white blood cells, 429.9.67 × 103/μl; hematocrit, 72.14%; mean corpuscular volume, 183.24 FL; mean corpuscular hemoglobin, 61.70 pg; mean corpuscular hemoglobin concentration, 32.37 pg; platelets, 7.01/μl; and red cell distribution width, 110.86/μl. The percentages of neutrophils, lymphocytes, monocytes, and eosinophils were 71.33%, 23.03%, 3.30%, and 1.43%, respectively. The gut content of the Eurasian collared dove mainly consisted of rice, wheat, corn, and millet seeds. Some stony materials were also present. Our study concluded that male and female Eurasian collared doves are alike in biometrics (except tail length) and hematological profiles. Gut content and weight were also similar. Males were slightly larger than females. The gut content showed that the Eurasian collared dove mainly feeds on rice, wheat, corn, and millet seeds. In this study, hematological parameters were also studied.

Urbanisation of the Common Wood Pigeon (Columba palumbus) in Southeast Hungary and its impact on the population of Eurasian Collared Dove (Streptopelia decaocto)

Abstract The Common Wood Pigeon (Columba palumbus Linnaeus, 1758) has very large populations in the European cities. However, the urbanisation of the species in the Maros–Körös köze region (Maros–Körös Interfluve) is recent and is happening before our eyes. In our study, we summarized our observations on the urbanised populations of the species in the region. Populations of the species in populated areas are currently spreading rapidly in the Maros–Körös köze region. In the past, it was a breeding species in the landscape of suburban areas far from populated areas. In recent years, it has appeared in towns and villages. It did not gradually arrive from the outer area of the settlements towards the interior of populated areas, but it was precisely in the park areas of the centres of settlements that the first pairs in these areas appeared and spread outwards. During the study, we also surveyed the nesting populations of the Eurasian Collared Dove (Streptopelia decaocto [Frivaldszky, 1838]) in the sampling areas, using the same methodology, so that we could also examine the proportion of both urbanised species. The population of that species was decreasing during the study period. The pairs of Common Wood Pigeons were more common in the central, more parked parts of the settlements, while the Eurasian Collared Dove was mainly found in peripheral areas. The increase in the population of the Common Wood Pigeons will cause major problems for agriculture, for which there is no solution at present.

Presencia de las palomas turca (Streptopelia decaocto) y africana de collar (Streptopelia roseogrisea) en el estado de Guerrero, México

Registramos a las palomas turca (Streptopelia decaocto) y africana de collar (Streptopelia roseogrisea) en Guerrero. La primera en cinco municipios del estado, en áreas suburbanas con vegetación secundaria e introducida, donde se ha establecido y se reproduce incrementando rápidamente su población. La segunda especie la registramos en cautiverio en las ciudades de Chilapa de Álvarez y Chilpancingo. Streptopelia decaocto exhibe pautas conductuales de mayor movilidad e independencia con respecto a la presencia humana, en contraste S. roseogrisea es una especie que vive en estrecha dependencia del humano. Por la evidencia, inferimos que S. decaocto está colonizando rápidamente el estado Guerrero, mientras que S. roseogrisea es reproducida como ave de ornato.

Retraction: MtDNA genetic diversity and structure of Eurasian Collared Dove (Streptopelia decaocto).

Retraction: MtDNA genetic diversity and structure of Eurasian Collared Dove (Streptopelia decaocto).

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.

Use of Fertility Control (Nicarbazin) in Barcelona: An Effective yet Respectful Method towards Animal Welfare for the Management of Conflictive Feral Pigeon Colonies.

Simple SummaryFeral pigeon is one of the most common urban species worldwide. Living free in urban areas, pigeons have found a favorable environment with the conditions to have a high fertility, thus leading to overcrowding, which causes thousands of millions in damages yearly. The management of overpopulated pigeon colonies presents numerous challenges, and several methods have been proposed and used. In recent decades, the concern in the society about animal welfare has grown, and now demands non-lethal methods in the management of wildlife, especially in cities. The management of feral pigeons in Barcelona, Spain, used to be carried out, like in many cities, by capture and elimination. However, as this method has been proven to be ineffective and the public concern about animal welfare has increased, in 2016, the Barcelona City Council decided to change the management towards a fertility control method. This study describes and evaluates, during three years, an efficient fertility control protocol that is able to reduce the number of pigeons in the treated colonies by 55.26% at the end of the study. The results of this study provide animal management administrations and companies with a non-lethal protocol to control pigeon populations while respecting animal welfare.This study describes a three-year evaluation (2017–2019) of a fertility control protocol using nicarbazin (Ovistop®) to reduce the abundance of the most conflictive colonies of feral pigeon, Columba livia var. domestica, in Barcelona, Spain, as a long-term strategy based on animal welfare. The treatment was supplied to 34 pigeon colonies by automatic hopper feeders installed in public areas. A superiority study and a population monitoring study were carried out to evaluate differences in the abundance of the colonies, as well as the proportion of juveniles, the possible intake of nicarbazin by non-target species and the movement of individuals among colonies. The results showed statistical differences in the population trends between the test (−22.03%) and control (+12.86%) groups, and a significant steady decreasing trend in the pigeon abundance (−55.26%) was registered until the end of 2019. The proportion of juveniles was significatively lower in the test colonies, and a non-target species (Eurasian collared doves, Streptopelia decaocto) was observed consuming in a residual form. The protocol using nicarbazin is able to both control the abundance of pigeons, with no impact over non-target species, and respond to the public interest about animal welfare by providing an ethical method to manage overabundant and/or conflictive populations.

Spatial Distribution and Habitat Overlap of Five Columbidae Species in the Czech Republic.

Simple SummaryThe spatial distribution of species and their utilisation of resources are essential for better understanding species ecology. Using data gathered by ornithologists in Czech Republic, we studied land use type utilisation of five pigeons and doves. Our study aimed to understand which species and type of land use are positively associated and whether the species are positively associated with land use heterogeneity. Additionally, we quantified the amount of land use type utilisation by each species and their spatial overlap in these land use types. We hypothesised that the species would mostly overlap in farmlands and urban areas. We found an almost complete overlap between the domestic pigeon (Columba livia domestica) and the Eurasian collared dove (Streptopelia decaocto), as well as between the common wood pigeon (Columba palumbus) and the European turtle dove (Streptopelia turtur). We confirmed our hypothesis that the species distribution not only overlapped in farmlands and urban areas, but also in forests. Our study provides insight into these common species distributions and habitat affinities.Habitat overlap occurs when two species co-exist in the same habitat and utilise the same resources. Using common bird monitoring data in Czech Republic from 2015 and 2016, we compared the affinities of five Columbidae species regarding land use types. Moreover, we analysed the effects of land use types and land use heterogeneity on five species distributions. The aim of the study was to quantify the habitat overlap of five Columbidae species regarding types of land use and land use heterogeneity. We predicted a high level of habitat overlap between most of the species and its occurrence in farmlands and urban areas. Our results confirmed the high habitat overlap of all five Columbidae species in farmlands. An almost complete overlap was recorded between Columba livia domestica and Streptopelia decaocto, as well as between Columba palumbus and Streptopelia turtur. Considering land use utilisation, C. livia and S. decaocto mainly utilised farmlands and urban areas. Furthermore, deciduous forests were utilised by Columba oenas and coniferous and mixed forests by C. palumbus. Finally, S. turtur mainly utilised grasslands and avoided urban areas. We conclude that Columbidae species overlap in spatial distributions, mostly in urban areas, forests, and farmlands. Our study provides a summary of these common species habitat affinities.

Increased presence of the invasive, exotic Eurasian Collared-Dove (Streptopelia decaocto) in the Chamela-Cuixmala Biosphere Reserve, Mexico, after hurricane disturbance

Invasive species are a main cause of biodiversity loss, making it important to register their incursion into conserved, protected areas. We evaluated presence of the exotic Eurasian Collared-Dove (Streptopelia decaocto) in and around the Chamela-Cuixmala Biosphere Reserve, Jalisco, after hurricane disturbance. During March to May 2017 and 2018, we carried out 1 km transect surveys at three sites: Chamela Biological Station, Careyes town, and Cuixmala ranch, and conducted observations of the Eurasian Collared-Dove when detected. We also collated records from the eBird database to compare the number of Eurasian Collared-Doves reported before (2010-2015) and after (2016-2020) major hurricane disturbance. We recorded a total of 27 doves over 18 surveys, with the majority of records at the Chamela Biological Station within the reserve. Most sightings were of one dove, but we recorded a group of 4 doves at Chamela in May 2018. Doves spent significantly more time perched around buildings at Chamela in 2018 compared to 2017, and made occasional flights into trees at the dry forest border. The eBird data showed a significant increase in records of the Eurasian Collared-Dove outside the reserve after hurricane disturbance. Our results showed increased presence of the Eurasian Collared-Dove at sites within the biosphere reserve following major hurricane disturbance, possibly due to forest damage creating open-habitat and niche opportunities within the dry forest mosaic. We recommend continued monitoring to restrict establishment of this invasive species in forested areas of the reserve, and evaluate potential impacts on native species.

Endoparasitoses of the Eurasian collared dove (Streptopelia decaocto) on the northern Black Sea coast of Ukraine

One of the main tasks of ecological parasitology at the present stage is to determine patterns of spread of invasive diseases of poultry in the environment through a thorough epidemiological examination, as well as to determine the main directions and factors of spread of parasites in Ukraine. Some pigeon health problems can affect their populations, but parasitic infections play an important role. Our research found that 83.3% of Eurasian collared doves examined (Streptopelia decaocto) were affected by endoparasites. The commonest helminths were Raillietina spp. with the average invasion intensity of 4.9 ± 1.3 specimens/ind., Baruscapillaria spp. and Ascaridia columbae with an invasion intensity of 4.6 ± 1.5 and 3.7 ± 2.1 specimens/ind., respectively. The commonest cestodes were Raillietina spp. with the extent of invasion of 52.2% and Davainea proglottina – 6.7%. The Amoebotaenia cuneata cestodes were recorded in 3 (3.3%) doves, and Echinolepis carioca – only in 2 (2.2%) doves. Six doves (6.7%) were infected with the nematode Ascaridia columbae and 5 (5.6%) – Baruscapillaria spp. Eimerian oocysts were found in 9 (10%) collared doves, and Trichomonas gallinae was recorded in 15 (16.7%) birds. According to the results of helminthological autopsy and identification of the isolated pathogens, 8 varieties of mixinvasions were identified. In association with the Rayetins, there were the protozoa Eimeria spp. and Trichomonas gallinae and the nematode Ascaridia columbae. Two-component invasions were registered in 78.6% of doves, three-component infestations in 14.3% and four-component infestations in 7.1% of birds. Mixed infection with Raillietina spp. + Ascaridia columbae was found in the small intestine of Streptopelia decaocto, which was also pathomorphologically observed to have catarrhal-hemorrhagic enteritis, which was accompanied by the formation of a large number of spotted hemorrhages on the mucous membrane, and in the places of attachment of cestodes - necrotic-caseous areas. Temperature and other weather conditions such as humidity, precipitation, etc. of the northern Black Sea coast affect the population size of intermediate host cestodes. Continuous monitoring of invasive diseases of pigeons of different species will help to take the necessary preventive measures against endoparasitoses of birds.