Results 41 to 50 of about 19,383 (290)
Journal of Field Ornithology, 2023 Animal coloration is an important communication signal that varies among taxa and affects survival and reproduction. Species-specific color is influenced by a variety of factors including phylogeny, predation, sexual selection, light and resource ...
Sydney M Miller +3 more
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Depigmented wing patch size is a condition-dependent indicator of viability in male collared flycatchers [PDF]
, 2003 Honesty of sexual advertisement is thought to be the result of signalling costs. Because production costs of depigmented plumage patches are probably very low, their role as honest signals of individual quality has been questioned. Costs of bearing these
Garamszegi, László Zsolt +2 more
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Annals of Tropical Research, 2020 The Philippines has a number of chicken genetic groups, mostly of non-descript and indigenous type. In view of the need to expand the information on native chicken diversity, this study was conducted to identify distinct qualitative traits and estimate ...
Cyrill John P. Godinez +2 more
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Avian Research, 2020 Background Parrots (Psittacidae Family) are one of the most colorful groups of birds in the world, their colors produced both structurally and via unusual pigments (psittacofulvins). Most species are considered to be monogamous, and many have been viewed
Macarena Morales +3 more
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Extreme reversed sexual dichromatism in a bird without sex role reversal
, 2005 Brilliant plumage is typical of male birds, reflecting differential enhancement of male traits when females are the limiting sex. Brighter females are thought to evolve exclusively in response to sex role reversal.
Endler, John A. +2 more
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A quantitative analysis of objective feather color assessment: Measurements in the laboratory do not reflect true plumage color [PDF]
, 2016 © 2016 American Ornithologists' Union.An important driver of the evolution of animal coloration is sexual selection operating on traits that are used to transmit information to rivals and potential mates, which has a major impact on fitness.
Dall, Sasha R X +4 more
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Inheritance of plumage color in poultry [PDF]
Experimental Biology and Medicine, 1910 The experiments of Dr. C. C. Guthrie who transplanted hens'ovaries to foster mothers of different plumage color from their own and was led to the conclusion that the engrafted ovaries became functional and their eggs gained certain characteristics from the foster mothers'are not at all convincing to the student of normal heredity of plumage color in ...
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La geometría de visualización afecta el dicromatismo sexual y la conspicuidad de la coloración del plumaje no iridiscente de Tersina viridis [PDF]
, 2016 Some types of plumage color are difficult to characterize spectrophotometrically because the properties of the reflected light change with viewing geometry (i.e.
Barreira, Ana Soledad +3 more
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THE COLOR PATTERN OF ALABIO DUCK (Anas platyrhynchos Borneo) IN SOUTH KALIMANTAN
Journal of the Indonesian Tropical Animal Agriculture, 2014 The study was carried to identify the phenotypic variation of Alabio duck (Anas platyrhynchosBorneo) being kept by smallholder. This research was conducted in Hulu Sungai Selatan (HSS), HuluSungai Tengah (HST) and Hulu Sungai Utara (HSU), South ...
S. Suryana +3 more
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Convergent evolution of parrot plumage coloration
PNAS NexusAbstract Parrots have remarkable plumage coloration that result in part from a unique ability to produce pigments called psittacofulvins that yield yellow to red feather colors. Little is known about the evolution of psittacofulvin-based pigmentation.
Fushi Ke +6 more
openaire +2 more sources