colouration Archives - British Ornithologists' Union

Is timing of moult adaptive?

By Anders Hedenström|2021-09-29T15:00:53+00:004 Oct 2021|colouration, IBIS, migrant, Migration, moult, plumage, ringing|

Two species suffer catastrophic embryo mortality in recent heatwaves

Shiny feathers in the mountains

By Chih-Ming Hung|2021-09-30T11:45:55+00:0020 Sep 2021|adaptation, alpine birds, avian biology, colouration, communication, diversification, evolution, feathers, forest birds, IBIS, island birds, passerines, phenotypic variation, plumage, population divergence, ultraviolet light|

Mountain babblers reflect more UV light than lowland babblers

Grey plumage: What is it good for?

By Jente Ottenburghs|2021-08-24T07:41:36+00:0026 Aug 2021|adaptation, camouflage, colouration, selection, sexual dimorphism|

A correlative study explores several hypotheses.

Collection bias in bird colour aberrations

By Adam Zbyryt|2020-12-22T15:04:42+00:0026 Oct 2020|albinism, citizen science, collection bias, colour mutations, colouration, leucism, phenotypic variation|

What can digital data teach us about colour aberrations and human behaviour?

A predation risk experiment

By Carina Nebel|2020-12-15T17:19:50+00:0014 Oct 2019|colour-polymorphism, colouration, crypsis, experiment, predation, predator-prey interaction|

What makes prey an easy snack for predators?

The lie of the “black lightning”: signal reliability in a seabird

By Camilla Soravia|2020-10-08T13:56:13+00:0016 Sep 2019|colouration, Disturbance, plumage, Seabirds|

Does Storm Petrels’ plumage coloration reliably signal body condition?

The dark side of the nestling

By David López-Idiáquez|2021-02-24T14:40:26+00:0017 Sep 2018|colouration, dominance, plumage|

Darker nestlings display bolder personalities, but only if they are female