Results 101 to 110 of about 51,270 (352)
Non-leucistic aberrations in the plumage of birds from Nayarit, Mexico
Huitzil, 2018 Abnormalities in the plumage are caused by multiple environmental and genetic factors. Plumage aberrations have been reported in Mexico, but all have been classified as leucistic (white color due to a recessive gene).
David Molina +6 more
doaj +1 more source
Nature, 1911 SIR HARRY JOHNSTON'S plea for the Plumage Bill in NATURE of December 11 will, no doubt, be considered an acceptable contribution by those who believe they possess the mental altitude to which he was born. I venture, however, to suggest that if he and his friends will leave their high mental estate and descend to the plain facts that business men must ...
openaire +1 more source
The ecology of the kākerōri (Rarotonga flycatcher) Pomarea dimidiata, with special reference to fledged young : a thesis presented in partial fulfilment of the requirements for the degree of Master of Science in Ecology at Massey University [PDF]
, 1993 The Kakerori (Pomarea dimidiata) is a small flycatcher, endemic to Rarotonga in the Cook Islands. In August 1991 the total world population was estimated at 47 individuals, an increase of 14 birds from the previous year.
Sanders, Kerry H.
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Classifying avian drinking behaviour: ecological insights and implications in a changing world
Biological Reviews, EarlyView.ABSTRACT Water is a fundamental currency of life, and its availability significantly influences animal behaviour, physiology and distributions. However, our knowledge around the dependence on water for drinking and the direct and indirect mechanisms driving related behaviours remains partial in the context of changing climates. Here, we review patterns
Shannon R. Conradie, Marc T. Freeman
wiley +1 more source
Optimális vedlési stratégiák = Optimal moult strategies [PDF]
, 2009 A pályázat fő célja annak kiderítése volt, hogy a különböző állapotváltozók hogyan befolyásolják az optimális viselkedést, speciálisan a hogyan befolyásolják a fő életmenet események időzítését az éves cikluson belül. E cél elérése érdekében több modellt
Alasdair, I. Houston +4 more
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How wildlife respond to tropical cyclones: short‐term tactics and long‐term impacts
Biological Reviews, EarlyView.ABSTRACT From butterflies to lizards and from sharks to seabirds, wildlife exhibit tactics to survive the impacts of tropical cyclones, also known as hurricanes, cyclones, or typhoons depending on where they occur. Some species seek refuge during the storm by moving, some remain in place and ride it out, and others move longer distances, avoiding the ...
Erin L. Koen +15 more
wiley +1 more source
Loss, persistence and reversal of phenotypic traits
Biological Reviews, EarlyView.ABSTRACT The irreversibility of complex trait loss has long been a tenet of evolutionary biology. However, this idea is increasingly at odds with the numerous documented exceptions across the Tree of Life. We synthesise this growing body of evidence across a diverse array of taxa and traits, exploring the evolutionary conditions that enable ...
Giobbe Forni +4 more
wiley +1 more source
Poultry Science: The coloration of plumage in poultry species has substantial economic significance. Putian black ducks encompass 2 distinct strains characterized by black and white plumage variations resulting from selective breeding.
Ruiyi Lin +7 more
doaj +1 more source
Age-related change in carotenoid-based plumage of the American redstart (Setophaga ruticilla) [PDF]
, 2013 Plumage colouration serves a variety of functions for birds, including signalling conspecifics, crypsis, and predator-prey interactions. Though much research has been conducted on colour change in species which exhibit delayed plumage maturation, where ...
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Ecography, EarlyView.Migration is challenging for birds, especially juveniles, who experience high mortality rates during migration. The challenge is exacerbated in the Anthropocene, contributing to widespread population declines. Conservation efforts focused on increasing juvenile survival could bolster population recovery.
Dylan M. Osterhaus +2 more
wiley +1 more source