Phenotypic flexibility and the evolution of organismal design [PDF]
, 2003 Evolutionary biologists often use phenotypic differences between species and between individuals to gain an understanding of organismal design. The focus of much recent attention has been on developmental plasticity – the environmentally induced ...
Drent, Jan,, Piersma, Theunis,
core +15 more sources
Journal of Advanced Veterinary and Animal Research, 2022 Objectives: Domestic pigeons (Columba livia domestica) have diverse plumage pigmentations. Melanocortin 1 receptor (MC1R) gene variation has been correlated with color traits.
Xiang-Xiang Jiang +15 more
doaj +1 more source
Sexually selected male plumage color is testosterone dependent in a tropical passerine bird, the red-backed fairy-wren (Malurus melanocephalus). [PDF]
PLoS ONE, 2011 BACKGROUND: Sexual signals, such as bright plumage coloration in passerine birds, reflect individual quality, and testosterone (T) may play a critical role in maintaining signal honesty.
Willow R Lindsay +2 more
doaj +1 more source
Molt strategy and aging of Rufous-collared Sparrow (Zonotrichia capensis) in Bogotá, Colombia
Caldasia, 2018 Molting is an important process of birds’ natural history and learning about molt and plumage allows a better understanding of various aspects of birds’ life.
Diego Cueva
doaj +1 more source
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
core +1 more source
Animals, 2021 The experiment was carried out with altogether 1740 non-beak-trimmed laying hens, which originated from Bábolna TETRA Ltd., representing two different types (Rhode Island Red (RIR) and Rhode Island White (RIW)) and four different lines (Lines 1–2: RIR ...
Gábor Milisits +10 more
doaj +1 more source
Extreme offspring ornamentation in American coots is favored by selection within families, not benefits to conspecific brood parasites [PDF]
, 2019 Offspring ornamentation typically occurs in taxa with parental care, suggesting that selection arising from social interactions between parents and offspring may underlie signal evolution.
Lyon, Bruce E., Shizuka, Daizaburo
core +2 more sources
Decline of the boreal willow grouse (Lagopus lagopus) has been accelerated by more frequent snow-free springs [PDF]
, 2020 Climate change has influenced a range of species across the globe. Yet, to state a noted decline in the abundance of a given species as a consequence of a specific environmental change, for instance, spatially explicit long-term data are a prerequisite.
Helle, Pekka +4 more
core +1 more source
Differential introgression and the maintenance of species boundaries in an advanced generation avian hybrid zone [PDF]
, 2016 Background: Evolutionary processes, including selection and differential fitness, shape the introgression of genetic material across a hybrid zone, resulting in the exchange of some genes but not others.
Kovach, Adrienne I. +3 more
core +4 more sources
Ultraviolet (UV) light perception by birds: a review
Veterinární Medicína, 2009 The ability to perceive the near ultraviolet part of the light spectrum (the wavelength 320-400 nm) has been detected in many bird species. This ability is an important bird sense. The ecological importance of UV perception has been studied mainly in the
J. Rajchard
doaj +1 more source