French: Martinet batassia German: Bengalensegler Spanish: Vencejo palmero asiático
J. E. Gray
Subspecies and Distribution
C. b. balasiensis
(J. E. Gray, 1829) – most of Indian Subcontinent S of Himalayas, from NE India (S Gujarat and Delhi area) E to area W of Assam hills, Bangladesh and S to Sri Lanka.
C. b. infumatus
(P. L. Sclater, 1866) – NE India (Assam hills) E to Hainan, and S through SE Asia to Malay Peninsula, Sumatra and Borneo.
C. b. bartelsorum
Brooke, 1972 – Java and Bali.
C. b. pallidior
(McGregor, 1905) – Philippines.
11–13 cm; 8·3–10 g. Very small swift with long thin wings and long, deeply forked tail shorter than that of adult C. parvus and lacking streamer-... read more
Most common call is a pleasant twittering, typically several fast notes interspersed by a longer... read more
Primary dependence on fan palms (Livistona, Borassus, Corypha, Areca... read more
Food and feeding
Hemiptera, Coleoptera and Hymenoptera recorded. Detailed Malaysian study of nestling diet (both faeces and bolus) found Coleoptera,... read more
Virtually year-round with local variation of peak, mainly Mar–Aug in lowlands and Apr–Jun in hills, India; Dec to early Jul,... read more
Status and conservation
Not globally threatened (Least Concern). Common to locally abundant. Least common where fan palms at lowest density. May be absent where palm crowns vigorously cut back,... read more
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