| patterns of bird migration phenology in south africa suggest northern hemisphere climate as the most consistent driver of change. | current knowledge of phenological shifts in palearctic bird migration is largely based on data collected on migrants at their breeding grounds; little is known about the phenology of these birds at their nonbreeding grounds, and even less about that of intra-african migrants. because climate change patterns are not uniform across the globe, we can expect regional disparities in bird phenological responses. it is also likely that they vary across species, as species show differences in the streng ... | 2015 | 25640890 |
| [the systematic position of mites of the genus larinyssus strandtmann (gamasoidea, rhinonyssidae), parasitizing gulls]. | a study was carried out of the variability of mited colledted from 6 species of birds as follows: larus argentatus pontopp., l. minutus pall., gelochelidon nilotica gm., chlidonias leucoptera (temm.), ch. nigra (l.) and sterna hirundo l. structural peculiarities characteristic of the parasites of the above species have been revealed. the mites from st. hirundo were isolated into a distinct species, larinyssus substerna sp. n., which is most close to l. sterna fain, 1972. the new species differs ... | 2007 | 1143929 |
| prevalence of multiple subtypes of avian influenza virus antibodies in egg yolks of mallards ( anas platyrhynchos) and white-winged terns ( chlidonias leucopterus) in the northeastern republic of china. | wild birds are natural hosts of avian influenza viruses (aiv) and can transmit viruses to poultry and other species. to monitor the prevalence of aiv antibodies, 211 eggs from wild mallards ( anas platyrhynchos) and 177 from wild white-winged terns ( chlidonias leucopterus) were collected from zhalong wetland and xianghai wetland in northeastern republic of china from april to september, 2016. a hemagglutinin inhibition test detected the presence of h1, h3, h5, and h7 subtype-specific antibodies ... | 2018 | 29894211 |
| biota from the coastal wetlands of praia da vitória (terceira, azores, portugal): part 3 - birds. | the data presented here come from field observations of aves between august 2013 and october 2018 as part of a life research project aiming to preserve and restore three coastal wetlands from praia da vitória (terceira island, azores, portugal). systematic monthly observations were carried out for five years in order to provide a checklist and monitoring of bird species and subspecies observed in three sites: paul da praia da vitória (ppv), paul do belo jardim (pbj) and paul da pedreira do cabo ... | 2019 | 31182911 |
| the incursion and spread of highly pathogenic avian influenza h5n8 clade 2.3.4.4 within south africa. | the report of a mass die-off of white-winged terns (chlidonias leucopterus) along the shores of lake victoria in uganda in january 2017 was a warning that highly pathogenic avian influenza (hpai) h5n8 clade 2.3.4.4 had entered the avian populations of the african rift valley. in early june 2017, zimbabwe reported an outbreak of the virus in commercial breeder chickens near harare, and on june 19, 2017, the first case of hpai h5n8 was confirmed in a broiler breeder operation near villiers, mpumal ... | 2019 | 31131572 |