For the first time, we estimated the population sizes of two swan species and four goose
species from observations during the non-breeding period in East Asia. Based on combined …

Technological advances in the field of animal tracking have greatly expanded the potential
to remotely monitor animals, opening the door to exploring how animals shift their behaviour …

Shorter duration of ice‐free conditions at successively northern latitudes increasingly
constrains large‐bodied waterbirds from completing their reproductive cycle before freeze …

In late 2014, a highly pathogenic avian influenza (hereafter HPAI) H5N1 outbreak infected
whooper swans Cygnus cygnus wintering at the Sanmenxia Reservoir area, China, and …

Avian influenza has advanced from a regional concern to a global health issue with
significant economic, trade, and public health implications. Wild birds, particularly waterfowl …

In the winter of 2021–2022, multiple subtypes (H5N8 and H5N1) of high pathogenicity avian
influenza viruses (HPAIVs) were confirmed to be circulating simultaneously in Japan. Here …

East Asian songbirds are known to migrate along two major corridors: from mainland
Eurasia via China to South-East Asia, and from Japan and easternmost Russia through …

Migration through the Eastern Palearctic (EP) flyway by tundra swans (Cygnus columbianus)
has not been thoroughly documented. We satellite-tracked the migration of 16 tundra swans …

Long-distance migratory birds travel more rapidly in spring than in autumn, as they face
temporal breeding constraints. However, several species travel slower in spring owing to …

Extrinsic and endocrine factors are important mechanisms influencing the timing of spring
bird migration. Whooper swans (Cygnus cygnus), including 122 adults and subadults over …