d4 RUDOLF SÖDERBERG, STUDIES OF THE BIRDS IN NORTH WEST AUSTRALIA. 
Juvenal. — The cross-bars are in the spec. ”/s (in strong moulting) distinctly 
broader than in the others. Otherwise the plumage is like that of the adults. 
Moulting. — Seems to take place before Dec. (cf. Astur fasciatus). The juvenal 
is in strong moulting on the upper side, where new blue feathers are mixed in with 
discoloured old ones. 
Common, especially at Meda; was lacking only at Sunday Island. 
Uroaétus audax LATE, 
Math. handl. n:r 262. JF (juv.) Nooncanbah, Fitzroy r. ?/2 1911. 
Ecological. — Besides Nooncanbah it was seen at Mowla Downs, at Meda 
and in Beagle bay. At the latter place I saw several birds together (in July). The 
bird is probably a carrion-eater, for these birds were living on dead animals. 
FEutolmaétus morphonoides GouLp. 
Math. handl. n:r 263. J (juv.) Nooncanbah !5/; 1911. 
Only this specimen was met with at Nooncanbah (Fitzroy river). 
Haliaétus leucogaster GM. 
Math. handl. n:r 265. 
This eagle lived at several places at Sunday Island. It breeds here in the 
steep places in the rocks. Mr. S. HADLEY showed me one egg taken by him from 
this bird. It had a bluish white ground-colour and a single redbrown »flame» going 
over the whole of one side of the egg. 
Haliastur girrenera VIEILL. 
Math.: handl. n:r: 266. 9 ad. Sunday Island ?!/, 1911; 98 ad. Beagle bay, Dampier land 5/2 1911; 
2 ad. Broome ?/3 1911. 
Was not uncommon at Sunday Island, where it lived up among the mountains 
by the sea. Was met with also at Broome and Beagle bay (Dampier land), in the 
latter places at a fresh-water ereek 8 miles from the coast. 
Haliastur sphenurus VIEILL. 
Math. handl. n:r 267. 92 ad. Nooncanbah, Fitzroy r. 7/1 1911, moult. 
Was very seldom seen and only one specimen was caught. 
