Trait polymorphisms are a perennially popular topic of study in ecology and evolutionary
biology. Plumage polymorphisms occur broadly in birds, with a particularly high rate among …

Large‐scale environmental forces can influence biodiversity at different levels of biological
organization. Climate, in particular, is often associated with species distributions and …

Migrant bird populations often show substantial variation in route choice and timing.
Determining whether this population‐level variation is driven by between‐individual …

Every year, several hundred million birds cross the Mediterranean on their migration from
Eurasia to their wintering quarters in Africa. As many migrants travel at night or at high …

In wild vertebrates, several species exhibit eumelanic color polymorphism with the
coexistence of dark and light morphs. The maintenance of such polymorphism suggests the …

Intraspecific phenotypic variability is key to respond to environmental changes and
anomalies. However, documenting the emergence of behavioral diversification in natural …

The specific spatial distribution and habitat association—strongly influenced by
environmental factors or competitive interactions—are major issues in ecology and …

How multiple morphs are maintained within populations of colour polymorphic bird species
remains a challenging question in evolutionary ecology. In some systems, differential …

This is the first study reporting the population status and reproductive biology of the
Eleonora's Falcon in Algeria. To determine the status, nest site selection, and breeding …

The global breeding population of Eleonora's Falcon (Falco eleonorae) is distributed from
the Canary Islands in the west, across the Mediterranean Sea, to Cyprus in the east. The …