132 Mr. R. Hall on Birds 
Stages H, J, K, M, and N are clear steps in the " ladder '^ 
of development to the mature form. 
10. Petr(eca goodenovii. Red-capped Rohin. (Hairs 
Key, p. 13.) 
Young sk. Long Island, Pelsart Group, Houtman^s 
Abrolhos. 27.10.99. 
This species is generally mentioned as met with singly or 
in pairs. I saw only one specimeu upon the whole group, 
the species being now recorded from the Abrolhos for the first 
time. The struggle of so young a bird to reach an island 
forty miles from the mainland must have been great. No 
assistance to do so would, most likely, be given to it beyond 
the strong off-shore wind with which it started. An island- 
life did not seem to have affected its short course of conti- 
nental manners, for it flew from stone to stone instead of 
from branch to branch, keeping to the- beach and behaving 
just as a Robin does. 
The bird was so young that the fledgling feathers still 
remained in places, and the forehead bore no trace of a red 
flush ; commissure yellow ; length of wing 2*4 inches. 
11. Petr(eca bicolor. Hooded Robin. (Hall's Key, 
p. 14.) 
A. Sk. ad. c?. 7.10.99. -^ 
B-C. Sks. ad. ? s. 5.10.99. / ^^ 
-TA -. n/r I,. ^-.^^.^ >- Katanninff. 
D. c?. Moulting. 6.10.99. V ^ 
E. Young. 5.10.99.-' 
F. Young. 6.10.99. Nannine, Cue. 
Specimen D. — This bird is in a tricolor state — white, brown, 
and black. It does not show the streaked brown or white of 
the young, nor the black of the adult (there is a uniform 
brown phase that seems to indicate a stage between them). 
All the upper surface is brown and black intermixed, the 
browns eventually giving way to the blacks. On the inter- 
scapulium and back is a small patch of black feathers with 
merely a few that are brown; the throat is jet-black; the 
cheeks shew a mixture of black and brown ; the breast and 
abdomen are white; the scapulars not a clear white; the 
wings and tail are marked with white as in the adult ; the 
