scholarly journals Breeding and passage migrant bird species in Kars province

2020 ◽  
pp. 179-187
Author(s):  
Ömral Ünsal ÖZKOÇ
Keyword(s):  
Bird Species ◽  
Migrant Bird

scholarly journals Genetic characterization of a novel picornavirus distantly related to the marine mammal-infecting aquamaviruses in a long-distance migrant bird species, European roller (Coracias garrulus)

2013 ◽  
Vol 94 (9) ◽  
pp. 2029-2035 ◽  
Author(s):  
Ákos Boros ◽  
Tamás Kiss ◽  
Orsolya Kiss ◽  
Péter Pankovics ◽  
Beatrix Kapusinszky ◽  
...  
Keyword(s):  
Marine Mammal ◽  
Genetic Characterization ◽  
Phylogenetic Analyses ◽  
Bird Species ◽  
Long Distance ◽  
Coracias Garrulus ◽  
Faecal Samples ◽  
European Roller ◽  
Migrant Bird

Despite the continuously growing number of known avian picornaviruses (family Picornaviridae), knowledge of their genetic diversity in wild birds, especially in long-distance migrant species is very limited. In this study, we report the presence of a novel picornavirus identified from one of 18 analysed faecal samples of an Afro-Palearctic migrant bird, the European roller (Coracias garrulus L., 1758), which is distantly related to the marine-mammal-infecting seal aquamavirus A1 (genus Aquamavirus). The phylogenetic analyses and the low sequence identity (P1 26.3 %, P2 25.8 % and P3 28.4 %) suggest that this picornavirus could be the founding member of a novel picornavirus genus that we have provisionally named ‘Kunsagivirus’, with ‘Greplavirus A’ (strain roller/SZAL6-KuV/2011/HUN, GenBank accession no. KC935379) as the candidate type species.

Defining the key wintering habitats in the Sahel for declining African-Eurasian migrants using expert assessment

2014 ◽  
Vol 24 (4) ◽  
pp. 477-491 ◽  
Author(s):  
PHILIP W. ATKINSON ◽  
WILLIAM M. ADAMS ◽  
JOOST BROUWER ◽  
GRAEME BUCHANAN ◽  
ROBERT A. CHEKE ◽  
...  
Keyword(s):  
Bird Species ◽  
Field Studies ◽  
Habitat Associations ◽  
Expert Assessment ◽  
Rapid Decline ◽  
Breeding Populations ◽  
Western Palearctic ◽  
Wintering Area ◽  
Declining Species ◽  
Migrant Bird

SummaryThe Sahel in West Africa is a major wintering area for many western Palearctic migrants. The breeding populations of many of these have declined over the past 50 years. However, there have been few intensive field studies on migrant ecology in the Sahel and these were generally within a very restricted area. Consequently our knowledge of the distribution of species within this extensive area and the habitat associations of these species is limited. Understanding these habitat associations is essential for the effective conservation management of populations. We brought together a group of experts and consulted a wider group by email to assess the main Sahelian habitat types used by 68 African-Eurasian migrant bird species. Those species that showed strongest declines during 1970–1990 were associated with more open habitats than those newly declining during 1990–2000, when declining species were associated with habitats with more shrubs and trees. Populations of species that winter in the Sahel are generally stable or increasing now as rainfall has increased and is now near the long-term average for the Sahel. Those which use the Sahel only as a staging area are, in many cases, in rapid decline at present.

scholarly journals Efecto de la estacionalidad y lluvias en la avifauna del Chaco Serrano Austral, Argentina

2017 ◽  
Vol 65 (3) ◽  
pp. 953
Author(s):  
Gustavo Alfredo Fava ◽  
Juan Carlos Acosta ◽  
Graciela Mirta Blanco
Keyword(s):  
Bird Species ◽  
Reproductive Activity ◽  
Breeding Habitat ◽  
Bird Abundance ◽  
Group Management ◽  
Natural Park ◽  
Chaco Serrano ◽  
Site Survey ◽  
Migrant Bird ◽  
Resident Bird

In subtropical regions like the Chaco Serrano (33° S), rainfall has a marked seasonality, and water flood, caused by heavy rains, may have important consequences for dependent ecosystems. Conversely, the high pressure on available resources during dry periods can also affect the fauna diversity and distribution. Even though birds have shown to be excellent ecological indicators of these shifts in the environment, currently little is known about the avifauna of the Argentine Chaco Serrano phytogeographic district. Our aim was to study the resident bird population status in the Southern Chaco Serrano, its fluctuations in richness and abundance, and its relationship to seasonal variations, in monthly and annual hydroperiods. In order to assess the resident bird status over a two year period (2011 Mar.-2013 Feb.) we carried out 18 sampling surveys during pre-breeding (spring), breeding (summer) and non breeding periods (autumn-winter), in the Northeastern part of the Valle Fértil Natural Park, San Juan province, Argentina. During each site survey, we recorded bird assemblages found in six transects, and obtained bird abundance and species diversity. A mixed general linear model was employed to evaluate relationships between the studied variables. We found a total of 98 species of birds belonging to 33 families (44 resident species, 23 spring visitors, six summer visitors, two winter visitors and 23 with scarce registers). We also registered 68 of these species in both hydroperiods, 28 only during rainy periods and only two during the dry period. Both richness and abundance showed the highest values during the pre-breeding and rainy seasons, while different tendencies were detected during the isolated monthly rainfalls. These changes in bird densities were associated with the arrival of migratory species, mainly spring visitors, and probably in relationship with their reproductive activity, and to seasonal fluctuations in food resources. The Southern Chaco Serrano is a subtropical semiarid place that seems to be an important breeding habitat for many migrant bird species, which in turn promoted seasonal changes in species density and diversity, mainly during rainy years. This work contributed to our understanding on the causes of richness and abundance variations on birds, and will contribute to this important group management and conservation in this area.

scholarly journals Report of the early winter migrants and resident birds in an inland wetland near Tundi Camp, Bajana, Gujarat

2018 ◽  
Vol 10 (5) ◽  
pp. 11652
Author(s):  
Abhishek Chatterjee ◽  
Sudeshna Ghoshal ◽  
Soumyajit Chowdhury ◽  
Pinakiranjan Chakrabarti
Keyword(s):  
Bird Species ◽  
Avian Species ◽  
Feeding Guilds ◽  
Early Winter ◽  
Feeding Guild ◽  
Avian Community ◽  
The Family ◽  
Migrant Bird

The study is based on the avian community observed in the region.  In total, 1,079 individuals, 62 genera and 79 species of birds belonging to 35 families have been recorded.  Among them, the family Anatidae with 20.42% incidence is the most frequent; immediately followed by the family Phoenicopteridae (10.59% of occurrence).  Little Cormorant Phalacrocorax niger is the most abundant avian species observed.  The community consists of 44% resident; 36% resident-migrant and 20% migrant bird species.  It was observed that the concerned community shows a considerable diversity and a correspondingly low value of dominance.  In the feeding guild analysis, the insectivore guild has the most number of recorded avian species.  The feeding guild affiliations also point out that the overall community is fairly rich in its composition as it houses bird species belonging to various feeding guilds. 

Avifaunal diversity of Tilyar Lake, Rohtak, Haryana, India

2020 ◽  
Vol 12 (8) ◽  
pp. 15909-15915
Author(s):  
Jagjeet Singh ◽  
Sandeep Antil ◽  
Vivek Goyal ◽  
Vinay Malik
Keyword(s):  
Bird Species ◽  
Single Species ◽  
Iucn Red List ◽  
Suitable Habitat ◽  
Avian Diversity ◽  
Protective Measures ◽  
The Rich ◽  
Migrant Bird ◽  
Total Species ◽  
Near Threatened

Avian diversity of Tilyar Lake (28.883–28.879 0N & 76.637 –76.634 0E)  located on the eastern outskirts of Rohtak, Haryana was conducted from May 2017 to April 2018.  A total of 73 avian species belonging to 62 genera and 31 families under 15 orders was observed. Order Passeriformes with 21 species in 12 families dominated the avifauna whereas orders Bucerotiformes, Podicipediformes, and Psittaciformes were poorly represented with a single species each.  Family Anatidae was the most dominant representing 13.89% (n=10) of the total species recorded.  Among the reported species 75% (n=54) were resident while 25% (n=18) were migrant.  Common Pochard Aythya ferina assessed globally as Vulnerable, while Painted Stork Mycteria leucocephala, Oriental Darter Anhinga melanogaster and Black-headed Ibis Threskiornis melanocephalus are assessed as Near Threatened, whereas the rest of the species were in the Least Concern category of the IUCN Red List 2019.  The omnivorous feeding habit was shown by the maximum number of species while frugivorous and granivorous bird species were in the least numbers.  The rich avifaunal diversity of the Tilyar Lake confirms it as a suitable habitat for both resident and migrant bird species. Therefore, the present study suggests the need for incorporation of appropriate protective measures for conservation of the avian heritage of Tilyar Lake, Rohtak.

scholarly journals The impact of an invasive exotic bush on the stopover ecology of migrant passerines

2013 ◽  
Vol 36 (1) ◽  
pp. 1-11
Author(s):  
J. Arizaga ◽  
◽  
E. Unamuno ◽  
O. Clarabuch ◽  
A. Azkona ◽  
...  
Keyword(s):  
Deposition Rate ◽  
Bird Species ◽  
Exotic Plants ◽  
Fuel Load ◽  
General Hypothesis ◽  
Control Zone ◽  
Migrant Bird ◽  
Invasive Exotic ◽  
The Impact ◽  
Fuel Deposition

Migration is highly energy-demanding and birds often need to accumulate large fuel loads during this period. However, original habitat at stopover sites could be affected by invasive exotic plants outcompeting native vegetation. The impact of exotic plants on the stopover behavior of migrant bird species is poorly understood. As a general hypothesis, it can be supposed that habitat change due to the presence of exotic plants will affect migrants, having a negative impact on bird abundance, on avian community assemblage, and/or on fuel deposition rate. To test these predictions, we used data obtained in August 2011 at a ringing station in a coastal wetland in northern Iberia which contained both unaltered reedbeds (Phragmites spp.) and areas where the reedbeds had been largely replaced by the invasive saltbush (Baccharis halimifolia). Passerines associated with reedbeds during the migration period were used as model species, with a particular focus on sedge warblers (Acrocephalus schoenobaenus). The saltbush promoted a noticeable change on bird assemblage, which became enriched by species typical of woodland habitats. Sedge warblers departed with a higher fuel load, showed a higher fuel deposition rate, and stayed for longer in the control zone than in the invaded zone. Invasive plants, such as saltbush, can impose radical changes on habitat, having a direct effect on the stopover strategies of migrants. The substitution of reedbeds by saltbushes in several coastal marshes in Atlantic Europe should be regarded as a problem with potential negative cons equences for the conservation of migrant bird species associated with this habitat.

Phenological differences among selected residents and long-distance migrant bird species in central Europe

2013 ◽  
Vol 58 (5) ◽  
pp. 809-817 ◽  
Author(s):  
Lenka Bartošová ◽  
Miroslav Trnka ◽  
Zdeněk Bauer ◽  
Martin Možný ◽  
Petr Štěpánek ◽  
...  
Keyword(s):  
Central Europe ◽  
Bird Species ◽  
Long Distance ◽  
Migrant Bird
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