Data from: Positive feedback between ecological and reproductive character displacement in a young avian hybrid zone

Niclas Vallin, Amber M. Rice, Richard I. Bailey, Arild Husby & Anna Qvarnström
Character displacement can reduce costly interspecific interactions between young species. We investigated the mechanisms behind divergence in three key traits - breeding habitat choice, timing of breeding and plumage coloration - in Ficedula flycatchers. We found that male pied flycatchers became expelled from the preferred deciduous habitat into mixed forest as the superior competitor, collared flycatchers, increased in numbers. The peak in food abundance differs between habitats, and the spatial segregation was paralleled by an...
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