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White-tailed Robin Myiomela leucura Scientific name definitions

Nigel Collar, Josep del Hoyo, David Christie, and Guy M. Kirwan
Version: 1.0 — Published March 4, 2020
Text last updated July 3, 2018

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Introduction

Taxonomic note: Lump. This account is a combination of multiple species accounts originally published in HBW Alive. That content has been combined and labeled here at the subspecies level. Moving forward we will create a more unified account for this parent taxon. Please consider contributing your expertise to update this account.

Field Identification

White-tailed Robin (White-tailed)

17–19 cm; 24–30 g. Male nominate race is bluish black, with shiny mid-blue forehead to brow and shoulder patch, very small white neck patch (often concealed), white oval-shaped basal two-thirds of outer tail; bill and legs black. Female has same tail pattern as male, but mouse-brown above, buff-brown below, with indistinct white throat crescent; however, some individuals are apparently much darker, at least in parts of the range (1). Juvenile is blackish brown with buff spotting above, buff streaking below, tail pattern as female. Race montium is very slightly smaller than nominate, female with more olive-toned, less buffy-brown, breast.

White-tailed Robin (Cambodian)

c. 17 cm; 17·5–25·5 g. Male is almost entirely dark slaty blue, with very small white neck patch (often concealed) and somewhat bluer shoulder patch (often indistinct); basal two-thirds or so of outer tail white; iris dark brown; bill and legs slate or black. Female is dark olive-brown above including wing-coverts, becoming warmer on mantle to rump, with pale tips to uppertail-coverts; off-white lores and narrow off-white eyering; cheeks and ear-coverts with buffish feather tips, and lighter buffish brown below, with dark-streaked white throat, greyish and whitish belly; tail dark grey-brown, outer two-thirds white at base (pattern as that of male). Juvenile is blackish brown with buff spotting above, buff streaking below, tail as female.

Systematics History

Editor's Note: This article requires further editing work to merge existing content into the appropriate Subspecies sections. Please bear with us while this update takes place.

White-tailed Robin (White-tailed)

Often placed in Cinclidium. Hitherto treated as conspecific with M. cambodiana (which see). Two subspecies recognized.

White-tailed Robin (Cambodian)

Often placed in Cinclidium. Hitherto treated as conspecific with M. leucura, but differs in its lack of a shiny blue forehead (3); slatier body plumage (1); shorter wing (effect size –2.31, score 2); and longer bill (effect size 1.24; score 1). Possibly parapatric with M. leucura. Monotypic.

Subspecies


EBIRD GROUP (POLYTYPIC)

White-tailed Robin (White-tailed) Myiomela leucura leucura/montium


SUBSPECIES

Myiomela leucura leucura Scientific name definitions

Distribution
C and E Himalayas from WC Nepal to NE India (Arunachal Pradesh and S Assam hills) E to C China (N to SE Gansu and S Shaanxi), S to Myanmar, NW and N Thailand, Laos, Vietnam, Peninsular Malaysia and Hainan.

SUBSPECIES

Myiomela leucura montium Scientific name definitions

Distribution
Taiwan.

EBIRD GROUP (MONOTYPIC)

White-tailed Robin (Cambodian) Myiomela leucura cambodiana Scientific name definitions

Distribution

SE Thailand and S Cambodia (Cardamom Mts and Elephant Mts).

Distribution

White-tailed Robin (Cambodian)

SE Thailand and S Cambodia (Cardamom Mts and Elephant Mts).

Habitat

White-tailed Robin (White-tailed)

Thick shady, bushy or scrubby undergrowth of dense moist broadleaf evergreen forest in lower cloud zone, often in bamboo and/or river-valley bottoms near running water. Breeds in Himalayas at 1200–2700 m, wintering from foothills to 1500 m; in Taiwan at 1000–2500 m, descending to c. 200 m in winter.

White-tailed Robin (Cambodian)

Inhabits dense broadleaf evergreen forest, often in areas of bamboo, at 1000–1400 m.

Migration Overview

White-tailed Robin (White-tailed)

Sedentary; some altitudinal and minor short-distance movements.

White-tailed Robin (Cambodian)

Apparently sedentary.

Diet and Foraging

White-tailed Robin (White-tailed)

Insects, berries. Forages largely on ground, but also in low underbrush, and more arboreal than Tarsiger bush-robins. Very secretive. Constantly opens and shuts tail.

White-tailed Robin (Cambodian)

Little information. Diet insects and berries. Very secretive. Forages on ground and in low undergrowth; sometimes in bushes and trees.

Sounds and Vocal Behavior

White-tailed Robin (White-tailed)

Song a series of short well-spaced phrases consisting of thin silvery liquid quavering warble of 7–8 notes, reminiscent of (but deeper and flutier than) song of Brachypteryx leucophris: “tey-tlee-i-ta-wey-i”. Calls include thin 1–2-note whistles and low “tuc”.

White-tailed Robin (Cambodian)

Song poorly known, seems not to differ significantly from that of M. leucura, a short thin warbling phrase of up to eight notes. Call a low “tuk”, also low whistles.

Breeding

White-tailed Robin (White-tailed)

Presumed Apr–Jun, reportedly into Aug, in Himalayas; Apr onwards in China; as late as Sept in Myanmar; Mar–Apr in Peninsular Malaysia. Nest either domed or cup-shaped, made of grass and mud, placed in shrub close to ground or under rock ledge or fallen tree, or in hole in bank. Eggs 2–5, fairly glossy or glossless white or pale pink to pinkish brown, plain or with faint darker pinkish freckles, size 20·7–25·2 mm × 15·8–17·7 mm. No other information.

White-tailed Robin (Cambodian)

No published information, other than that males were in breeding condition in Mar in Cambodia. Other details thought unlikely to differ significantly from those pertaining to M. leucura.

Conservation Status

White-tailed Robin (White-tailed)

Not globally threatened (Least Concern). Locally common in India; sparsely distributed in scattered small populations in Nepal. Uncommon in Myanmar, Thailand, Peninsular Malaysia and Indochina. Status in China unclear, although it is reportedly common in parts of Yunnan. Global population size has not been quantified, but Taiwan (race montium) estimated to hold c.10,000–100,000 breeding pairs (2). The species is suspected to be in decline owing to continuing habitat destruction and deterioration.

White-tailed Robin (Cambodian)

Not globally threatened (Least Concern). Status poorly known, but this species is considered likely to be relatively rare overall. In Cambodia, the species occurs within Phnom Samkos Wildlife Sanctuary, where it is one of the commonest members of the forest understorey within its elevational range. A formal assessment of its population level and conservation status is urgently required, and the possible existence of any major threats, such as habitat loss, needs to be determined.

Recommended Citation

Collar, N., J. del Hoyo, D. A. Christie, and G. M. Kirwan (2020). White-tailed Robin (Myiomela leucura), version 1.0. In Birds of the World (S. M. Billerman, B. K. Keeney, P. G. Rodewald, and T. S. Schulenberg, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.whtrob2.01
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