A new study used modern methods to reassess a foundational study in biology that explained how ecologically similar species of wood warblers coexist. The research team examined foraging behavior, ...

In birds, singing behaviors play a critical role in mating and territory defense. Although birdsong can signal individual quality and personality, very few studies have explored the relationship ...

Many bird species are monogamous. However, genetic studies have shown that the social partner is often not the genetic father of all offspring. Some studies found biased sex ratios: more males than ...