Results 51 to 60 of about 2,887 (174)

An overview of the oldest and most comprehensive avifauna of the early Eocene British London Clay

Papers in Palaeontology, Volume 12, Issue 3, May/June 2026.
Abstract Early Eocene birds from the British London Clay have been known for two centuries, but a comprehensive understanding of the avifauna of the London Clay Formation is still in its infancy. In the present study, the bird assemblage of the Walton Member is reviewed, which represents one of the oldest subdivisions of the formation.
Gerald Mayr
wiley   +1 more source

Detailed cytogenetic analysis of three duck species (the northern pintail, mallard, and common goldeneye) and karyotype evolution in the family Anatidae (Anseriformes, Aves)

Вавиловский журнал генетики и селекции
Galliformes and Anseriformes are two branches of the Galloanserae group, basal to other Neognathae. In contrast to Galliformes, Anseriformes have not been thoroughly researched by cytogenetic methods.
V. R. Beklemisheva, K. V. Tishakova, S. A. Romanenko, D. A. Andreushkova, V. A. Yudkin, E. А. Interesova, F. Yang, M. A. Ferguson-Smith, A. S. Graphodatsky, A. A. Proskuryakova   +9 more
doaj   +1 more source

Integumentary fibrosarcoma in a free‐living swan (Cygnus olor): Medical and welfare considerations

Veterinary Record Case Reports, Volume 14, Issue 2, May 2026.
Abstract A 10‐kg adult male mute swan (Cygnus olor) of unknown age was admitted for investigations of two large ventral masses overlying the keel bone, which were discharging purulent material. The masses measured 8.9 × 2.1 cm and 4.2 × 3.2 cm. Empirical treatment with non‐steroidal anti‐inflammatory drugs and antimicrobials was instigated.
Rachael Amy McKinney, Katherine Hughes
wiley   +1 more source

A new Paleogene fossil and a new dataset for waterfowl (Aves: Anseriformes) clarify phylogeny, ecological evolution, and avian evolution at the K-Pg Boundary.

PLoS ONE
Despite making up one of the most ecologically diverse groups of living birds, comprising soaring, diving and giant flightless taxa, the evolutionary relationships and ecological evolution of Anseriformes (waterfowl) remain unresolved.
Grace Musser, Julia A Clarke
doaj   +1 more source

A Global, Taxon‐Stratified, High‐Resolution Sampling‐Effort Dataset From GBIF for Bias‐Aware Ecological Modelling

Diversity and Distributions, Volume 32, Issue 5, May 2026.
ABSTRACT Introduction and Aim Spatiotemporal and taxonomic sampling bias in biodiversity occurrence data poses critical challenges for robust ecological inference, species distribution models (SDMs), and conservation planning. Despite the exponential growth in global biodiversity records over recent decades, these biases persist.
Ahmed El‐Gabbas
wiley   +1 more source

THE ROLE OF WILD BIRDS IN PRESERVATION AND PREVALENCE OF AVIAN PARAMYXOVIRUS SEROTYPE 1 (NEWCASTLE DISEASE VIRUSES) IN SIBERIA AND THE FAR EAST, RUSSIA

Юг России: экология, развитие, 2016
The aim is to evaluate ecological diversity of wild birds in Siberia and the Russian Far East, which are carriers of Newcastle disease virus that belongs to potentially dangerous pathogen for poultry.Methods.
A. V. Glushchenko, K. S. Yurchenko, A. K. Yurlov, Yu. G. Yushkov, M. Yu. Shchelkanov, A. M. Shestopalov   +5 more
doaj   +1 more source

Locus‐Specific Convergent Evolution and Interchromosomal Rearrangements Contribute to the Diversification of Amniote Type I Interferons

Evolutionary Applications, Volume 19, Issue 5, May 2026.
ABSTRACT Type I interferons (IFNs) play essential roles in antiviral immune responses. The extensive diversification of type I IFNs into various subtypes and duplicated gene copies has posed significant challenges for evolutionary reconstruction. To address this, we developed the type I IFN sequence composition and structure (IFN‐SCOPE) model and gene ...
Le Zhang, Fubo Ma, Jinpeng Liu, Yangchao Yu, Junxiao Ma, Lei Zhang, Bing Li, Chaofan Li, Kang Li, Peng Liu, Liguo Zhang   +10 more
wiley   +1 more source

Corrigendum: Stanchev R, Nikolov B (2025) Wetlands importance for the waterfowl species (order Anseriformes) wintering in Bulgaria, based on the Mid-Winter Waterbird Census data. Journal of the Bulgarian Geographical Society 52: 79–92. doi: 10.3897/jbgs.e144247 [PDF]

Journal of the Bulgarian Geographical Society
We recently published an assessment of the wetlands in Bulgaria important for the wintering waterfowl species (order Anseriformes) based on the Mid-Winter Waterbird Census data (Stanchev and Nikolov 2025).
Radoslav Stanchev, Boris Nikolov
doaj   +3 more sources

Holding a wing horizontal: Roles for muscles of the pectoral girdle other than the main two flight muscles

Journal of Anatomy, Volume 248, Issue 5, Page 830-842, May 2026.
This report explores which muscles of the pectoral girdle are employed to allow birds to hold their wings horizontally with a level aerofoil surface during a glide. Abstract Whilst many birds glide briefly with wings held horizontally, some species maintain this posture for extended periods during soaring.
D. Charles Deeming, María Clelia Mosto
wiley   +1 more source

Continent-wide association of H5N1 outbreaks in wild and domestic birds in Europe

Geospatial Health, 2011
The highly pathogenic avian influenza strain H5N1 was first detected in Europe in 2005, and has since been documented continent-wide in wild birds and poultry. However, the relative roles of each host group in transmission remain contentious.
Richard A. J. Williams, Xiang-Ming Xiao, A. Townsend Peterson   +2 more
doaj   +1 more source