Interspecific aggression for nest sites: Model experiments with long-tailed finches (Poephila acuticauda) and endangered gouldian finches (Erythrura gouldiae)
For cavity-nesting birds, tree cavities often represent a critical, defendable, and limiting resource that is frequently under intense interspecific competition. However, the dynamics of interspecific conflict resolution, especially between species of similar size, are often unclear. We experimentally tested aggression and nest-defense behaviors in Gouldian Finches (Erythrura gouldiae) and Longtailed Finches (Poephila acuticauda), two sympatric, cavity-nesting estrildid finches that are very...[Show more]
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