Results 41 to 50 of about 10,756 (226)
Svalbard rock ptarmigan: a first glimpse into parasite infections
Polar ResearchNatural ecosystems are under stress due to climate change and impacts are especially prominent at high latitudes. Manifestations of these changes include northward shifts in the distribution of birds, phenological mismatches, improved survival of ...
Ólafur K. Nielsen +3 more
doaj +1 more source
Does more sequence data improve estimates of galliform phylogeny? Analyses of a rapid radiation using a complete data matrix [PDF]
, 2014 The resolution of rapid evolutionary radiations or “bushes” in the tree of life has been one of the most difficult and interesting problems in phylogenetics. The avian order Galliformes appears to have undergone several rapid radiations that have limited
Edward L. Braun, Rebecca T. Kimball
core +1 more source
Estimating egg mass-body mass relationships in birds [PDF]
, 2020 The mass of a bird’s egg is a critical attribute of the species’ life history and represents a fundamental component of reproductive effort. Indeed, the tradeoff between the number of eggs in a clutch and clutch mass lies at the heart of understanding ...
Balasubramaniam, Priya +1 more
core
The evolution of pattern camouflage strategies in waterfowl and game birds. [PDF]
, 2015 This is the final version of the article. It first appeared from Wiley via http://dx.doi.org/10.1002/ece3.1482Visual patterns are common in animals. A broad survey of the literature has revealed that different patterns have distinct functions.
Allen +71 more
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The Anatomical Record, EarlyView.Abstract In birds, the neural canal houses a variety of anatomical structures including the spinal cord, meninges, spinal vasculature, and respiratory diverticula. Among these, paramedullary diverticula and the extradural dorsal spinal vein may leave behind osteological correlates in the form of pneumatic foramina and fossae, and a bilobed geometry of ...
Jessie Atterholt +5 more
wiley +1 more source
Research advances of Galliformes since 1990 and future prospects
Avian Research, 2018 Background Galliformes are widely distributed throughout the world and economically important to humans as domesticated animals or gamebirds. They are at a unique position for advancing knowledge and techniques of wildlife conservation as the barometer ...
Shan Tian +4 more
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An uncertain future for the endemic Galliformes of the Caucasus [PDF]
Science of The Total Environment, 2019 Impacts of climate change are already evident in ecosystems worldwide. High-latitude and altitude regions are at greatest risk because the effects of climate change are greater in these regions, and species from these areas have limited ability to track their climate envelopes.
Hof, Anouschka R., Allen, Andrew M.
openaire +4 more sources
The Anatomical Record, EarlyView.Abstract Hadrosaurid dinosaurs are generally regarded as “crested” or “non‐crested” depending on the presence or absence of a bony cranial crest. At least one supposedly “non‐crested” hadrosaur is known to have possessed a soft tissue cranial crest (or comb), based on an exceptionally preserved “mummified” specimen. Here we redescribe this specimen and
Henry S. Sharpe +4 more
wiley +1 more source
Avian Research, 2019 Background Disentangling the relative importance of environmental variables and interspecific interaction in modulating co-occurrence patterns of sympatric species is essential for understanding the mechanisms of community assembly and biodiversity.
Lijun Chen +5 more
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Floor Substrate Preferences of Chickens: A Meta-Analysis
Frontiers in Veterinary Science, 2020 Environmental enrichment promotes sensory and motor stimulation for species-typical behaviors, which in turn enhance animal well-being. For farmed Galliformes, housing systems often limit enrichment to bedding and litter, that simultaneously act as ...
Valerie Monckton +2 more
doaj +1 more source