This Secondary Area is defined by the range of its one endemic species, Dusky Gerygone Gerygone tenebrosa, which is confined to mangroves (perhaps more abundant on the seaward side of mangrove belts) from King Sound south to Bush bay in Western Australia. At least three populations exist (and three races have been described: north to south, tenebrosa, whitlocki and christopheri), separated at the Eighty Mile Beach, and at the break in mangroves between Pt Cloates and Carnarvon (Blakers et al. 1984).

Recommended citation
BirdLife International (2024) Endemic Bird Area factsheet: West Australian mangroves. Downloaded from https://datazone.birdlife.org/eba/factsheet/419 on 22/11/2024.