17

Dusky Gerygones are very small insectivore birds. Their plumage is almost all-grey, with a light-grey front and a darker grey back. They have only an inconspicuous, short light-grey supercilium that only reaches to above the eye. Compared to other species of gerygone, their dark-grey bill is long and slender. Legs and feet are black. The unique feature characterising Dusky Gerygones is that they have white irises. Juvenile Dusky Gerygones have a yellowish tinge to their underparts and a paler bill than adults, in particular the gape. Their irises start off brownish-grey before paling to become white.

The overall distribution of this species can be assessed, and specific locations where birds have been spotted can be found, based on individual sighting reports submitted by birdwatchers to ebird.org .

The global distribution of the Dusky Gerygone is available HERE .

Dusky Gerygones are found only in northern and north-western Western Australia (WA). There are two races. Nominate race "tenebrosa" lives in coastal areas from about the Broome/Lagrange area in the South-west (on the eastern side of Eighty Mile Beach) to just beyond the Walcott Inlet in the North-east. The range of race "christophori" extends from Pardoo (on the south-western end of Eighty Mile Beach) to Carnarvon (with one more known location on the southern side of Shark Bay) in WA.

Dusky Gerygones live exclusively in mangrove in intertidal wetlands.

M. Eaton found Dusky Gerygones, race "tenebrosa", at both Crab Creek Mangroves and Streeters Jetty, Broome, WA, in June/July 2026. All sighting, photographic information presented on this page has been kindly contributed by M. Eaton.