Выживание неполноценного слетка серой вороны ( Corvus cornix , Corvidae) длительное время под родительской опекой

2021 ◽  
Vol 100 (6) ◽  
pp. 693-702
Author(s):  
А. Н. Соловьев
Keyword(s):  
Corvus Cornix

Evaluating the Capability of Mirror Self-Recognition in Hooded Crows (Corvus cornix)

2020 ◽  
Vol 47 (7) ◽  
pp. 836-843
Author(s):  
A. A. Smirnova ◽  
Yu. A. Kalashnikova ◽  
M. V. Samuleeva ◽  
Z. A. Zorina
Keyword(s):  
Self Recognition ◽  
Corvus Cornix ◽  
Hooded Crows

scholarly journals A dolmányos varjú (Corvus cornix) kezelési terve Magyarországon

2017 ◽  
Vol 13 ◽  
pp. 15-48
Author(s):  
Sándor Faragó ◽  
Gyula Kovács ◽  
Péter Pál Hajas
Keyword(s):  
Corvus Cornix

scholarly journals Comparison of population densities of selected bird species breeding in main urban habitats in southwestern Poland

Biologija ◽  
2020 ◽  
Vol 66 (3) ◽  
Author(s):  
Grzegorz Kopij
Keyword(s):  
Bird Species ◽  
Mapping Method ◽  
Residential Area ◽  
Early Summer ◽  
Similar Species ◽  
Pica Pica ◽  
Residential Areas ◽  
Urban Habitats ◽  
Corvus Cornix ◽  
Reverse Situation

A simplified version of the territory mapping method was used. Four counts were conducted in a fragment of the city of Wrocław in the spring and early summer 2010. Two main urban habitats were distinguished: a densely built-up area with block buildings and a residential area with flat houses. In total, 44 bird species were recorded as breeding in the whole study area. Five species nested in a density higher than 10 pairs per 100 ha each: Columba palumbus, Pica pica, Streptopelia decaocto, Sylvia atricapilla, and Turdus merula. Whereas in the densely built-up areas Columba palumbus and Streptopelia decaocto were equally common, in the residential area Streptopelia decaocto was almost three times more common than Columba palumbus. Pica pica was about three times more common than Corvus cornix both in the builtup areas and in the residential areas. Although densely built-up areas and residential areas have a similar species composition, many species breed in different densities. This is probably due to a different structure of vegetation. While tall trees are relatively common and shrubs rare in the densely built-up areas, the reverse situation prevails in residential areas.

scholarly journals To Species Diversity of Nematode Fauna of Corvidae Vigors Family, 1825 at Volga River Delta

2018 ◽  
Vol 12 (3) ◽  
pp. 11-17
Author(s):  
A.P. Kalmykov ◽  
V.A. Strelkov
Keyword(s):  
River Delta ◽  
Volga River ◽  
Hooded Crow ◽  
Volga River Delta ◽  
Corvus Frugilegus ◽  
Corvus Cornix ◽  
New Hosts ◽  
First Time ◽  
Nematode Fauna

The purpose of the research is to systematize the long-term data on study of nematode fauna of Corvidae family birds of Volga river delta. Materials and methods. Data of helminthological researches carried out during the period from 1936 to 2017 in different landscape zones of Volga river delta are included into the project. The study of the species composition of the nematode fauna was carried out based on analysis of own and literature data received during helminthological autopsy of the Corvidae family birds belonging to 3 species: hooded crow (Corvus cornix Linnaeus, 1758), rook (Corvus frugilegus Linnaeus, 1758), magpie (Picapica Linnaeus, 1758). Traditional methods were used during collection and handling of helminthological material (Skryabin, 1928; Dubinina, 1955). Nematodes have been fixed by the mixture made from equal parts of 70% alcohol, lactic acid and 50% glycerol, 4% formalin solution or in Barbagallo liquid. Nematodes have been identified by famous indicators. Results and discussion. 480 specimen of Corvidae family birds, 170 specimen of which had been infested by nematode worms, were investigated in order to study helminthofauna at Volga river delta from 1936 to nowadays. Having summarized the literature data with the results from own study of Corvidae family parasitophauna we have made a taxonomical list including 17 species of nematodes. During the period from 1976 to 2017 we have been discovering 3 species of nematodes for the first time: Microtetrameres helix (Cram, 1927) - in a rook, Oxyspirura sygmoidea (Molin, 1860) - in a rook, a magpie and a hooded crow, Pseudaprocta decorata (Li, 1933) - in a magpie. 2 species of nematodes have been registered in Corvidae family as in new hosts in the studied region too. Baruscapillaria corvorum (Rudolphi, 1819) - in a hooded crow, a magpie and Diplotriaena tricuspis (Fedtschenko, 1874) - in a hooded crow.

scholarly journals Survival chances of ground nests in three different habitats in Krka National Park (Croatia)

2017 ◽  
Vol 118 (4) ◽  
Author(s):  
Jenő J Purger ◽  
Jasmina Mužinić
Keyword(s):  
Breeding Success ◽  
Nest Predation ◽  
Environmental Gradient ◽  
Survival Rates ◽  
Bird Species ◽  
Damage Rate ◽  
Daily Survival ◽  
Corvus Cornix ◽  
Reed Bed ◽  
Hooded Crows

Background and Purpose: Diverse Mediterranean wetlands sustain a high diversity of breeding birds. Breeding success of birds nesting on protected wetlands along river Krka is also influenced by predators. The aim of our study was to explore effects of predator pressures on ground nests of strictly protected birds using artificial nest located along environmental gradient. Materials and Methods: In May 2004 in locality Čulišićke bare, by placing out three batches of 25 artificially constructed ground nests in three different habitats: reed bed, marsh and meadow. The nests contained three chicken (real) eggs for the evaluation of nest predation rates, and plasticine (artificial) eggs for predator identification from tooth and bill imprints. Results and Conclusions: The number of nests depredated during one week was highest in wetland habitats: 52% was depredated in the marsh and 32% in the reed bed. However, a much lower damage rate (16%) was experienced in the meadow. The daily survival rate of nests did not differ significantly between the reed bed (0.95) and the marsh (0.91). However, the daily survival rates of nests in the meadow (0.98) was significantly higher (z = 2.49 P = 0.01) than in the marsh, bat no difference was found with comparing with the reed bed. Predators were difficult to determine because plasticine eggs usually disappeared from the nests in the reed bed. In the marsh and the meadow, primary predators were smaller birds, whereas small mammals were also important in the marsh. Nests in which predators succeeded in breaking at least one egg were later destroyed most by Hooded Crows (Corvus cornix). To apply these results for bird protection, the breeding success of certain threatened bird species should be monitored for a longer period.

Оценка способности серых ворон ( Corvus cornix ) узнавать свое отражение в зеркале

2019 ◽  
Vol 98 (11) ◽  
pp. 1223-1232
Author(s):  
А. А. Смирнова ◽  
Ю. А. Калашникова ◽  
М. В. Самулеева ◽  
З. А. Зорина
Keyword(s):  
Corvus Cornix

Prevalence of Avian Haemosporida Lineages in Hooded Crows (Corvus cornix) from Piedmont Region

2020 ◽  
Vol 174 ◽  
pp. 178
Author(s):  
L. Starvaggi Cucuzza ◽  
A.D. Pérez-Rodríguez ◽  
P. Pregel ◽  
B. Biolatti ◽  
F.T. Cannizzo ◽  
...  
Keyword(s):  
Corvus Cornix ◽  
Hooded Crows ◽  
Piedmont Region

scholarly journals Molecular characterization of the re-emerging West Nile virus in avian species and equids in Israel, 2018, and pathological description of the disease

2020 ◽  
Vol 13 (1) ◽  
Author(s):  
Gili Schvartz ◽  
Yigal Farnoushi ◽  
Asaf Berkowitz ◽  
Nir Edery ◽  
Shelly Hahn ◽  
...  
Keyword(s):  
Phylogenetic Analysis ◽  
Viral Load ◽  
West Nile Virus ◽  
Suitable Condition ◽  
Avian Species ◽  
Anser Anser ◽  
West Nile ◽  
Tissue Samples ◽  
Corvus Cornix ◽  
Cluster 2

Abstract Background In this report we describe the molecular and pathological characteristics of West Nile virus (WNV) infection that occurred during the summer and fall of 2018 in avian species and equines. WNV is reported in Israel since the 1950s, with occasional outbreaks leading to significant morbidity and mortality in birds, high infection in horses and humans, and sporadic fatalities in humans. Methods Animal and avian carcasses in a suitable condition were examined by post-mortem analysis. Tissue samples were examined for WNV by RT-qPCR and the viral load was quantified. Samples with sufficient material quality were further analyzed by Endpoint PCR and sequencing, which was used for phylogenetic analysis. Tissue samples from positive animals were used for culturing the virus in Vero and C6/36 cells. Results WNV RNA was detected in one yellow-legged gull (Larus michahellis), two long-eared owls (Asio otus), two domesticated geese (Anser anser), one pheasant (Phasianus colchicus), four hooded crows (Corvus cornix), three horses and one donkey. Pathological and histopathological findings were characteristic of viral infection. Molecular analysis and viral load quantification showed varying degrees of infection, ranging between 70–1.4 × 106 target copies per sample. Phylogenetic analysis of a 906-bp genomic segment showed that all samples belonged to Lineage 1 clade 1a, with the following partition: five samples from 2018 and one sample detected in 2016 were of Cluster 2 Eastern European, two of Cluster 2 Mediterranean and four of Cluster 4. Four of the positive samples was successfully propagated in C6/36 and Vero cell lines for further work. Conclusions WNV is constantly circulating in wild and domesticated birds and animals in Israel, necessitating constant surveillance in birds and equines. At least three WNV strains were circulating in the suspected birds and animals examined. Quantitative analysis showed that the viral load varies significantly between different organs and tissues of the infected animals.

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