Results 51 to 60 of about 728 (153)
Journal of Morphology, Volume 287, Issue 8, August 2026.Integration of detailed hindlimb anatomy with biomechanical analyses demonstrates that pedal performance in the red‐and‐green macaw is driven by specialized muscle architecture and force distribution. Hypertrophy of digit IV flexor musculature, together with modifications of the intrinsic and extensor muscles, enhances grasping stability, climbing, and
Sérgio Roberto Posso +2 more
wiley +1 more source
Beyond the Chicken: Alternative Avian Models for Developmental Physiological Research
Frontiers in Physiology, 2021 Biomedical research focusing on physiological, morphological, behavioral, and other aspects of development has long depended upon the chicken (Gallus gallus domesticus) as a key animal model that is presumed to be typical of birds and generally ...
Josele Flores-Santin, Warren W. Burggren
doaj +1 more source
Austral Ecology, Volume 51, Issue 6, June 2026.ABSTRACT Presently, there are three main hypotheses to explain why the leaves of many Australian mistletoes resemble their hosts. The eco‐physiological convergence hypothesis suggests that mistletoes must manage their physiology, especially their water relations, to match those of the host, to avoid killing themselves or the host branch they have ...
J. J. Midgley
wiley +1 more source
Comparative digesta retention patterns in ratites [PDF]
, 2014 Ratites differ in the anatomy of their digestive tract. Ostriches (Struthio camelus) have a long, voluminous colon and long paired caeca, Rheas (Rhea spp.) have a short colon with prominent paired caeca, and emus (Dromaius novaehollandiae) have neither ...
Frei, Samuel
core +2 more sources
"Terror birds" (Phorusrhacidae) from the Eocene of Europe imply trans-Tethys dispersal. [PDF]
PLoS ONE, 2013 BackgroundPhorusrhacidae was a clade including middle-sized to giant terrestrial carnivorous birds, known mainly from the Cenozoic of South America, but also occurring in the Plio-Pleistocene of North America and the Eocene of Africa. Previous reports of
Delphine Angst +3 more
doaj +1 more source
Bulletin of the British Museum (Natural History) Zoology, 1956 (Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
openaire +2 more sources
Veterinary Record Case Reports, Volume 14, Issue 2, May 2026.SUMMARY A 17‐year‐old, 24‐kg, female greater rhea (Rhea americana) presented with an acute onset of left wing droop. Clinical examination and radiographs revealed an open, simple, displaced, short‐oblique diaphyseal fracture of the distal third of the left humerus.
Pierre Huberdeau +6 more
wiley +1 more source
Frontiers in Zoology, 2012 Background Tonsils are secondary lymphoid organs located in the naso- and oropharynx of most mammalian species. Most tonsils are characterised by crypts surrounded by dense lymphoid tissue. However, tonsils without crypts have also been recognised.
Crole Martina R, Soley John T
doaj +1 more source
Ecology and Evolution, Volume 16, Issue 4, April 2026.We introduce ENHYDROSS, a new mechanistic model that uses optimal swimming speed and minimum cost of transport to estimate maximum dispersal distances and durations for vertebrates, enabling assessment of long‐distance oceanic dispersal potential. Applied to a range of extant and extinct animals, the model's estimates generally align with observed data;
Alexandros Pantelides +5 more
wiley +1 more source
Continental drifting and vicariant speciation of ratites.
, 2017 Breakup of supercontinent Gondwanaland during Early Cretaceous and biogeographical movement of ratites to different continents.
Niraj Rai (116632) +6 more
core +1 more source