The young are similar to the adult, but have the feathers of the upper surface fringed with grey, and those of the wings slightly margined with greenish yellow; the throat and sides of the chest lemon-yellow; face blackish, and not so mealy as in the adult.
The young of the Port Essington bird has the yellow colouring of the throat still more extensive than in the bird from New South Wales.
The figures represent an adult and a young bird from specimens killed on the Namoi.
ACANTHORHYNCHUS TENUIROSTRIS.
J. Gould and H. C. Richter del et lith. C. Hullmandel Imp.
ACANTHORHYNCHUS TENUIROSTRIS.
Slender-billed Spine-bill.
Certhia tenuirostris, Lath. Ind. Orn. Suppl., p. xxxvi.
Le Cap noir, Vieill. Ois. Dor., tom. ii. p. 94. pl. 60.
Slender-billed Honey-eater, Lath. Gen. Hist., vol. iv. p. 194. pl. lxii.
Flapping Honey-eater, Lath. Gen. Hist., vol. iv. p. 195.