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Crimson-backed Sunbird Leptocoma minima Scientific name definitions

Robert Cheke and Clive Mann
Version: 1.0 — Published March 4, 2020
Text last updated February 7, 2013

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Field Identification

8 cm; male 4–6 g, female 4–5 g. Very small. Male breeding has crown iridescent green , side of face blackish, upperwing and tail blackish-brown with lilac gloss, back and shoulder deep red, and rump metallic purple or lilac; purple throat, crimson upper breast bordered with blackish band below, dull yellow belly, bright lemon pectoral tufts, greyish-white flanks; iris dark brown; bill and legs blackish. Male in non-breeding plumage (Apr/May–Aug) is similar to female, but brighter olive on head, with back and shoulders metallic red, rump and uppertail-coverts metallic purple; lesser upperwing-coverts metallic red, forming with adjacent part of back a broad band. Female is olive above, with lower rump and uppertail-coverts deep maroon-crimson, remiges edged brown and olive, dull yellow below; iris dark brown, bill and legs blackish but paler than male, particularly at base of lower mandible. Juvenile resembles female but greyer, with duller red rump, more yellow below.

Systematics History

Monotypic.

Subspecies

Monotypic.

Distribution

Western Ghats (from N of Mumbai, S to hills of S Kerala), in W India.

Habitat

Evergreen forest, sholas, plantation shade trees, secondary growth and gardens; 300–2100 m, chiefly in foothills.

Movement

Local movement; absent from most of Nilgiris Oct–Mar.

Diet and Foraging

Insects, spiders (Araneae) and nectar . Forages singly, in pairs or in small groups. Active and acrobatic; clings upside-down to plants, also hovers. Defends flowering trees against conspecifics, also against flowerpeckers (Dicaeidae).

Sounds and Vocal Behavior

Squeaky song “see-see-whi-see-see-siwee…” lasting 5–10 seconds, frequently repeated; also described as high, thin, tinkly, irregular warble, “tseet-tsut-tseet”, notes in pairs or triplets, alternating in pitch. Call a continuous metallic “chik” during foraging; also various high-pitched, metallic ticking and chittering calls.

Breeding

Laying recorded in Feb–Mar, May and Dec in Mumbai area, Sept–Apr in Kerala but May–Oct in Nilgiris. Nest a neat, rounded, hanging pouch of fibres, moss and cobwebs, suspended from tip of twig within 2 m of ground in bush or sapling, commonly on Strobilanthes plant, on edge of path or clearing. Clutch 2 eggs; white with dense ring of reddish spots, and speckled reddish. No other information.

Not globally threatened. Restricted-range species: present in Western Ghats EBA. Locally common. Claimed occurrence in Sri Lanka (and reports of breeding in Mar–Apr) in early 20th century believed to be erroneous.
Distribution of the Crimson-backed Sunbird - Range Map
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Distribution of the Crimson-backed Sunbird
Crimson-backed Sunbird, Abundance map
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Data provided by eBird

Crimson-backed Sunbird

Leptocoma minima

Abundance

Relative abundance is depicted for each season along a color gradient from a light color indicating lower relative abundance to a dark color indicating a higher relative abundance. Relative abundance is the estimated average count of individuals detected by an eBirder during a 1 hour, 1 kilometer traveling checklist at the optimal time of day for each species.   Learn more about this data

Relative abundance
Year-round
0.26
0.7
2

Recommended Citation

Cheke, R. and C. Mann (2020). Crimson-backed Sunbird (Leptocoma minima), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.crbsun2.01
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