The islands are home to several endemic genera.
Birdlife International defines Endemic Bird Areas (EBAs) as places where the breeding ranges of two or more range-restricted species—those with breeding ranges of less than 50,000 km2 (19,000 sq mi)—overlap.
In order to qualify, the whole of the breeding range of at least two range-restricted species must fall entirely within the EBA.
[1] The entire Galápagos Islands archipelago is considered to be an Endemic Bird Area.
[2] Ten Important Bird Areas, which are areas which meet a specific set of internationally agreed criteria, fall within the EBA's boundaries.