Islands, with their distinct boundaries, act as natural laboratories for the study of evolution, biogeography and ecology. The Indo-Pacific region has the largest concentration of islands and archipelagos on the planet, making it the ideal place for testing these ideas.
The BIRDEVOBIOGEO (Passerine bird evolution and biogeography) project focused on a large group of passerine (perching) birds known as the Corvoidea, which comprises the crow family. The Corvoidea originated in the mid-Tertiary in Australia, before spreading across the Indo-Pacific archipelagos onwards to other continents.
Further details: How bird communities evolve and spread