Thought to be closest to F. cenchroides, and both traditionally considered members of the F. tinnunculus group (which see). Additional described forms include javensis (Java, Bali), renschi (Sumba) and timorensis (Timor), all synonymized with microbalius, and bernsteini (N Moluccas), regarded as inseparable from nominate. Two subspecies currently recognized.
Food and feeding
Status and conservation
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