MANGROVE ROBIN. 
Quoyornis leucurus Mathews, List Birds Austr., p. 176, 1913. 
Quoyornis leucurus leucurus Mathews, ib. 
Quoyornis leucurus greda Mathews, ib. 
Quoyornis leucurus alligator Mathews, ib. 
Quoyornis leucurus connectens Mathews, ib. 
Quoyornis leucurus cinereiceps Mathews, ib. 
Quoyornis leucurus normani Mathews, Austral Av. Rec., Vol. II., pt. 5, p. 93, Sept. 24th, 
1914 : Norman River, North Queensland. 
Poecilodryas ( pulverulentus ) cinereiceps Campbell, Emu, Vol. XVIII., p. 256, 1919 (W.A.). 
Distribution. Coastal in mangroves throughout tropical Australia from Hampton 
Harbour, mid-West Australia, to Cape York, North Queensland, Claudie River, 
and even Rockingham Bay, according to Messrs. Campbell and Barnard. 
Adult male. General colour above pale slate-grey including the crown of the head, hind- 
neck, scapulars and back ; upper wing-coverts and flight-quills dark hair-brown 
paler on the latter and becoming white on the margins of the inner webs of some 
of the feathers ; upper tail-coverts and tail black with white bases to the feathers 
except the outer feather on each side which is uniform black ; feathers covering 
the posterior portion of the nostrils, lores, feathers under the eye and rictal bristles 
black ; ear-coverts smoke-brown ; chin, throat, abdomen, and under tail-coverts 
white ; breast, sides of body and axillaries pale ash-grey ; thighs grey ; under 
wing-coverts blackish with white tips to some of the feathers ; under-surface of 
flight-quills dusky-brown ; lower aspect of tail black on the apical portion and 
white at the base. Eyes umber ; bill and feet black. Total length 160 mm. ; 
culmen 18, wing 83, tail 62, tarsus 23. Figured. Collected at Napier Broome 
Bay, North-west Australia, on the 1st of February, 1910. 
Adult female. Similar to the adult male, but smaller. 
Immature. Crown of head and nape smoke-brown with pale shaft-lines and dusky-brown 
bases to the feathers ; back slate-grey with some smoke-brown feathers inter- 
mixed ; wings pale brown with isabelline tips to the upper wing-coverts and inner- 
most secondaries ; flight-quills rather darker and broadly margined with white 
on the basal portion of the inner webs ; upper tail-coverts black tipped with smoke- 
brown ; tail black, white on the basal portion, except on the two middle feathers, and 
very slightly tipped with whitish ; rictal bristles black ; lores blackish ; the feathers 
below the eye and ear-coverts dark brown with pale shaft-lines ; a slightly indicated 
white line from the gape along the cheeks ; throat and breast pale smoke-brown ; 
abdomen, sides of body, and under tail-coverts white tinged with isabelline on the 
sides of the body ; the feathers on the under-surface downy in texture ■ and disin- 
tegrated ; outer edge of wing below pale smoke- brown ; axillaries white ; under 
wing-coverts blackish-brown ; under-surface of flight- quills greyish- brown, paler 
on the inner edges of the basal portion ; lower aspect of tail blackish, white at the 
base, and very slightly tipped with whitish. Eyes and bill black, feet slate colour. 
Collected at Normanton, Gulf of Carpentaria, Queensland, on the 6th of December, 
1913. 
Nest. “ Rather a compact and open cup-shaped structure . . . placed in the fork of a small 
horizontal branch of a mangrove tree, and is constructed principally of strips of 
bark, wound round and fastened with cobweb, and long strips of dried bark hang 
perpendicularly all round outside, some pieces being almost 3 inches in length. 
The nest is lined inside with fine dry roots and grass ” (White) ; “ dimension of 
275 
