Intro :
Biak Gerygone is a small songbird species belonging to the Acanthizidae family. This endemic bird is found only in Biak and Supiori. It actively forages in pairs, small groups, or sometimes alone, and may join mixed-species flocks. It feeds in the mid-canopy and is frequently seen in lowland forests, secondary forests, and along roadsides.
The color of Biak Gerygone is an olive-brown back, a grey head, a pale yellow belly, and a broken white eye-ring. It resembles the Biak race of the Island Leaf-Warbler, but Biak Gerygone has a black bill and legs rather than orange ones. Its call consists of a chaotic-sounding whistle with rising, falling, and discordant notes, occasionally interspersed with harsh sounds. They are small, with most having an average weight of 6–7 gr and show little variation in size across their distribution range.


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