EBird describes the Chestnut-tailed jungle flycatcher species complex as "Drab, medium-sized flycatcher with a long slender bill. Ranges from the southern Philippines to Borneo. Appearance differs across its range, but always look for a warm rufous tail, white throat, and diffusely brown-washed chest. Found in lowland and foothill forest in the Philippines, and in submontane and montane forest in Borneo. Makes forays from a low perch in the understory or forest edge. Song is a series of high and squeaky notes, often interspersed with buzzes.!”[2] This bird is differentiated from its sister species as it has a prominent rufous eyering, light brown upper mandible and paler brown lower mandible, and pinkish legs. [3]
Diet is not well known but pressumed to consist of insects. Usually solitary but also observed in mixed-species flocks. Typically forages close to the forest floor and understorey.
IUCN has yet to assess this bird as it does not yet recognize it as a separate species. All other birds endemic to the Sulu Archipelago are endangered species due to the deforestation that has occurred in the past decades. Due to this, as this species is also forest dependent, it is highly likely that it is threatened.[7]
^Sangster, G.; Alström, P.; Forsmark, E.; Olsson, U. (2010). "Multi-locus phylogenetic analysis of Old World chats and flycatchers reveals extensive paraphyly at family, subfamily and genus level (Aves: Muscicapidae)". Molecular Phylogenetics and Evolution. 57 (1): 380–392. doi:10.1016/j.ympev.2010.07.008. PMID20656044.
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