Species of bird
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The Philippine leaf warbler (Phylloscopus olivaceus) is a species of Old World warbler in the family Phylloscopidae.
It is endemic to the Philippines on the islands Bohol, Samar, Leyte, Negros, Mindanao, Basilan and the Sulu Archipelago. 
Description and taxonomy.
EBird describes the bird as "A small bird of forests from the lowlands to low elevations in the mountains. Olive-green on the back with golden-olive wings and tail and a dark crown and eye-stripe. Whitish on the belly and throat with a pale yellow eyebrow and yellow under the base of the tail. Note the dark pinkish legs and the bicolored bill, dark above and orange below. Similar to Lemon-throated Leaf Warbler, but has a whitish throat. Differs from Arctic-type warblers in lacking any wingbars. Song consists of a lazy up-and-down sequence of high-pitched whistled notes. " 
This species is monotypic. 
Feeds on small insects. Forages alone or joins mixed-species foraging flocks finding insects from the foliage.
Breeds from April to August but otherwise no information is known about its breeding habits and nest. 
Habitat and conservation status.
It is found in tropical moist lowland forest and forest edge up to 1,500.
IUCN has assessed this bird as least-concern species with the population believed to be stable. 
Occurs in a few protected areas like Pasonanca Natural Park, Mount Apo and Mount Kitanglad on Mindanao, Rajah Sikatuna Protected Landscape in Bohol and Samar Island Natural Park but actual protection and enforcement from illegal logging and hunting are lax.
References.
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