: The genus Phaethon (tropicbirds) consists of specialized seabirds that forage across vast ocean ranges, often far beyond protected coastal areas.
The classification of birds is a complex, evolving field that organizes the world's 11,000+ avian species into a structured hierarchy. A (plural: genera) serves as a critical middle ground in this system, grouping together species that share a recent common ancestor and similar physical or behavioral traits. The Role of Genus in Taxonomy bird genus
: Includes "gray geese" like the Greylag Goose, distinct from the "black geese" in the genus Branta . Diversity and Specialization : The genus Phaethon (tropicbirds) consists of specialized