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Juvenile pheomelanin-based plumage colouration has evolved more frequently in carnivorous species

Distinctive pheomelanin-based plumage colouration in juvenile birds has been proposed as a signal of immaturity to avoid aggression by older conspecifics, but recent findings suggest a detoxifying...

From landfills to lakes: gulls as transporters of nutrients

The lesser black backed gull Larus fuscus is now the second most abundant wintering waterbird in Andalusia, and has increased in numbers in recent years. Fuente de Piedra, the biggest shallow lake...

Broodmate aggression and life history variation in accipitrid birds of prey

Aggressive sibling competition for parental food resources is relatively infrequent in animals but highly prevalent and extreme among certain bird families, particularly accipitrid raptors...

Genetic evaluation of the Iberian lynx ex situ conservation programme

Ex situ programmes have become critical for improving the conservation of many threatened species, as they establish backup populations and provide individuals for reintroduction and reinforcement...