Results 51 to 60 of about 19,383 (290)
Female plumage coloration signals status to conspecifics
Animal Behaviour, 2016 Intrasexual competition in female birds is a widespread phenomenon but remains scarcely explored. Females compete for limited resources and the expression of signals that indicate their social status will be favoured by natural selection, generating a dominance hierarchy among individuals.
D. López-Idiáquez +3 more
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Dietary carotenoids predict plumage coloration in wild house finches [PDF]
Proceedings of the Royal Society of London. Series B: Biological Sciences, 2002 Carotenoid pigments are a widespread source of ornamental coloration in vertebrates and expression of carotenoid-based colour displays has been shown to serve as an important criterion in female mate choice in birds and fishes. Unlike other integumentary pigments, carotenoids cannot be synthesized; they must be ingested.
Geoffrey E, Hill +2 more
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Rainbow Photonic Crystals: Self‐Assembly of Carbohydrate Bottlebrushes Block Copolymers
Advanced Materials, EarlyView.Full‐color reflective 1D photonic crystals, capable of a tunable, responsive, and reversible color with high repeatability, are created from the self‐assembly of carbohydrate‐based brush block copolymers (BR01‐04). Abstract Tunable and responsive photonic crystal systems are the subject of great research interest owing to their ability to actively ...
Hong Li +6 more
wiley +1 more source
The Color Pattern of Alabio Duck (Anas Platyrhynchos Borneo) in South Kalimantan [PDF]
, 2010 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 ...
Hardjosworo, P. S. (P) +3 more
core
Relationship of phenotypic variation and genetic admixture in the Saltmarsh–Nelson\u27s sparrow hybrid zone [PDF]
, 2015 Hybridization is influential in shaping species\u27 dynamics and has many evolutionary and conservation implications. Identification of hybrid individuals typically relies on morphological data, but the assumption that hybrids express intermediate traits
Kovach, Adrienne I. +4 more
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Selection and inheritance of sexually dimorphic juvenile plumage coloration [PDF]
Ecology and Evolution, 2015 AbstractSexually dimorphic plumage coloration is widespread in birds and is generally thought to be a result of sexual selection for more ornamented males. Although many studies find an association between coloration and fitness related traits, few of these simultaneously examine selection and inheritance.
Tringali, Angela +2 more
openaire +3 more sources
Advanced Materials, EarlyView.A green, freeform manufacturing approach that utilizes robust aqueous two‐phase systems to create intricate and scalable photonic structures and non‐planar mechanochromic hydrogel actuators from plant‐based hydroxypropyl cellulose. This approach broadens the structural possibilities of sustainable photonic devices and mechanochromic systems, offering ...
Xiao Song +14 more
wiley +1 more source
Indian Journal of Animal Sciences, 2016 A study was planned to record and document the morphological characteristics with special reference to color variations in domestic geese. Knob, dewlap and paunch were present in 44.71, 3.07 and 13.59 % of birds respectively.
HENNA HAMADANI, A A KHAN
doaj +1 more source
Multiple Signaling Functions Of Song In A Polymorphic Species With Alternative Reproductive Strategies [PDF]
, 2017 Vocal traits can be sexually selected to reflect male quality, but may also evolve to serve additional signaling functions. We used a long-term dataset to examine the signaling potential of song in dimorphic white-throated sparrows (Zonotrichia ...
Formica, Vincent A. +4 more
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Color plumage polymorphism and predator mimicry in brood parasites [PDF]
Frontiers in Zoology, 2013 Plumage polymorphism may evolve during coevolution between brood parasites and their hosts if rare morph(s), by contravening host search image, evade host recognition systems better than common variant(s). Females of the parasitic common cuckoo (Cuculus canorus) are a classic example of discrete color polymorphism: gray females supposedly mimic the ...
Trnka, Alfréd, Grim, Tomáš
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