Aposematism in birds
Aposematism and mimicry in birds
Is timing of moult adaptive?
Two species suffer catastrophic embryo mortality in recent heatwaves
Shiny feathers in the mountains
Mountain babblers reflect more UV light than lowland babblers
Grey plumage: What is it good for?
A correlative study explores several hypotheses.
Collection bias in bird colour aberrations
What can digital data teach us about colour aberrations and human behaviour?
A predation risk experiment
What makes prey an easy snack for predators?
The lie of the “black lightning”: signal reliability in a seabird
Does Storm Petrels’ plumage coloration reliably signal body condition?
The dark side of the nestling
Darker nestlings display bolder personalities, but only if they are female