ARDEA RECTIROSTRIS., 
Great-billed Heron. 
Ardea rectirostris, Gould in Proc. of Zool. Soc., Part XT. p. 22, 
Oo-loo-mung-a, Aborigines of Port Essington, Gilbert, 
Maitch, Aborigines of Port Essington, McGillivray. 
Tue only part of Australia in which this bird has been seen is the Cobourg Peninsula on the north coast, 
where Mr, Gilbert found it breeding on the 5th of F ebruary. He states that it is solitary in its habits, 
and is only to be found in the most secluded creeks or in the open spaces among the mangroves. Mr. 
McGillivray observed it at Port Essington, but could not obtain any information respecting it. A fine adult 
specimen was procured by Dr. Sibbald, R.N., and Mr. McGillivray was so fortunate as to kill a young 
bird in a large mangrove swamp at the head of a bay called Wan-man-mema : it was exceedingly shy and 
watchful of his motions, and he had great difficulty in getting even a long shot at it. 
The nest observed by Mr, Gilbert was built in an upright fork of a large and lofty Alelaleuca at about 
eighty feet from the ground, and was formed of an outer layer of very strong sticks, with a few small twigs 
as a lining, and contained two ege's of a light ash-grey. 
The bird when discovered appeared very reluctant to leave the nest, and instead of the harsh croak 
usually uttered by it, emitted on this occasion a note drawn out to a considerable length, and at times 
resembling distant thunder, which was suddenly changed to a sound very like the groan of a person in 
extreme agony. 
Mr, Gilbert unfortunately failed in procuring the adults ; and a young bird is all of this species contained 
in my collection: an adult male may be found in that of the British Museum. 
The stomach is membranous, and the food consists of fish. 
Head, neck and all the upper surface vinous brown, a few of the back feathers with a faint line of white 
down the centre, and the primaries and tail washed with grey; chin white; front of the neck and all the 
under surface greyish brown, the lengthened plumes on the lower part of the neck and chest with a stripe 
of white down the centre; irides yellow; bill blackish brown ; basal half of the lower mandible yellowish 
white, apical half yellow ; legs and feet dark greenish grey; hinder part of the tarsi and inside of the feet 
yellowish grey. 
The figure represents the adult about half the natural size. 
