colouration Archives - British Ornithologists' Union

Why do birds have different eye colours?

By Eamon Corbett|2023-10-16T07:17:53+00:0016 Oct 2023|colour mutations, colouration, early-career researcher, evolution, Genetics|

Bird irises come in a rainbow of colours – but what are the causes behind them?

Can we solve one of ornithology’s oldest challenges?

By Leo Joseph|2023-10-12T10:40:06+00:009 Oct 2023|colour mutations, colouration, distribution, fieldwork, museum collections, pigeon, recording|

The challenge of accurately scoring iris colour in birds

Avian eggs and calibrated digital photography

By Klaudia Szala|2023-08-15T10:46:11+00:0021 Aug 2023|camouflage, colouration, early-career researcher, ECR, eggs, experiment, sensory ecology|

How varied light affects colour and pattern measurements of eggshells?

Doves of a feather flock together

By Will Smith|2023-04-12T10:20:50+00:0013 Apr 2023|bird assemblages, citizen science, colouration, connectivity, distribution, early-career researcher, ECR, feathers, fieldwork, Genetics, hybridization, hybrids, IBIS, island birds, plumage, population structure, range expansion|

Can we distinguish Rock Doves from feral pigeons using plumage?

Colour-by-stressor?

By Alana Krug-MacLeod (she/her)|2022-11-18T20:49:15+00:0024 Nov 2022|adaptation, avian biology, colouration, corticosterone, early career, early-career researcher, ECR, IBIS, physiology, shorebirds|

Pre-hatch temperature stress linked to bird colouration in adulthood

Feather colouration and the (mis)measure of patterns

By Natalia García|2022-08-19T09:38:56+00:0018 Aug 2022|avian biology, BOU-funded, Career Development Bursary, colouration, early career, ecology, ECR, evolution, feathers, morphology, passerines, plumage|

How to objectively “measure” colouration in species with complex patterns of spots and/or lines?

Aposematism in birds

By Tim Caro|2021-11-21T15:23:11+00:0022 Nov 2021|adaptation, antipredator behaviour, avian biology, colouration, communication, diversification, ecology, evolution, IBIS, morphology|

Aposematism and mimicry in birds

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 (he/him)|2021-08-24T07:41:36+00:0026 Aug 2021|adaptation, camouflage, colouration, selection, sexual dimorphism|

A correlative study explores several hypotheses.