Results 21 to 30 of about 460,219 (313)

Was dinosaurian physiology inherited by birds? [PDF]

open access: yes, 2009
Archaeopteryx is the oldest and most primitive known bird (Avialae). It is believed that the growth and energetic physiology of basalmost birds such as Archaeopteryx were inherited in their entirety from non-avialan dinosaurs.
Erickson Gregory M.   +25 more
core   +1 more source

Physical cognition : birds learn the structural efficacy of nest material [PDF]

open access: yes, 2014
This work was supported by the BBSRC (BB/I019502/1) and Roslin Institute Strategic Grant funding from the BBSRC. The APC was paid through RCUK OA block grant funds.It is generally assumed that birds’ choice of structurally suitable materials for nest ...
Meddle, Simone L.   +8 more
core   +1 more source

Detection of Laryngotracheitis Virus in Poultry Flocks with Respiratory Disorders in Slovenia

open access: yesViruses, 2021
Infectious laryngotracheitis (ILT) is an acute, highly contagious infectious disease of the upper respiratory tract in chickens and other poultry species that causes significant economic losses in countries worldwide.
Olga Zorman Rojs   +5 more
doaj   +1 more source

Spatially explicit population trend estimates of owls in the Maritime provinces of Canada and the influence of call playback

open access: yesAvian Conservation and Ecology, 2022
Documenting and interpreting trends in the abundance and distribution of bird populations is critical to monitoring their status and setting conservation priorities.
Danielle M. Ethier   +2 more
doaj  

Climate Change and the Spatiotemporal Variation in Survival of a Long-Distance Migrant (White Stork, Ciconia ciconia) across Western Europe

open access: yesBirds, 2021
The spatial variation in the strength of climate change may lead to different impacts on migratory birds using different breeding areas across a region.
Beatriz Martín   +2 more
doaj   +1 more source

Land cover habitat associations of breeding marsh birds and priority waterfowl differ in eastern Canada

open access: yesAvian Conservation and Ecology, 2022
Waterfowl (ducks, geese, swans) are among the few bird groups showing recent population increases in North America. By contrast, marsh birds (bitterns, rails, grebes) are declining, despite this group appearing to benefit from many of the same ...
Katharine R. Studholme   +4 more
doaj  

The detection of Mycoplasma sturni and Mycoplasma moatsii from the choana of a barn swallow (Hirundo rustica): a case report

open access: yesBMC Veterinary Research, 2023
Background Mycoplasmas are found in many different species. Until now 26 avian mycoplasma species have been described, but in the most free ranging bird species the prevalence and significance of Mycoplasma spp. is still unclear. Case presentation In May
Theresa Sophie Klostermann   +1 more
doaj   +1 more source

Frugivory in Raptors: New Observations from Australia and a Global Review

open access: yesBirds, 2021
The diets of raptors are some of the best studied and well-known of all bird groups. Raptors are typically carnivores, hunting and feeding on vertebrates and, for some species, invertebrates. Here, we described instances of the Black Kite (Milvus migrans)
James A. Fitzsimons, Jack Leighton
doaj   +1 more source

The Various Ways in Which Birds Blink

open access: yes, 2023
There has, to date, been no systematic study of the various ways in which birds blink. Digital video recordings were made, and studied using still frames, of 524 bird species, mainly in zoos but also in the wild.
Jesse J. Parsons, John G. L. Morris
core   +1 more source

Birds [PDF]

open access: yesPhilosophical Transactions of the Royal Society of London, 1879
Abstract Our knowledge of the recent Avifauna of the island of Rodriguez has hitherto been confined to a few memoirs published by Mr. Edward Newton, and Professor Alfred Newton of Cambridge. The former has given us an account of a hurried trip of a few days duration made by him in 1864 (Ibis, 1865, pp.
openaire   +1 more source

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