Vol. II, Pt. I] GIFFORD— BIRDS OF THE GALAPAGOS ISLANDS 71 



yellow; tarsus and toes scarlet; under side of toes and webs 

 flesh-colored. Maxillse of very high-plumaged adults are 

 tinged with scarlet from the black of the anterior portion to 

 the posterior end of the nostrils. 



Juvenal plumage — Iris dark brown; orbital ring olive-buff; 

 bill olive-buff, tipped with plumbeous; skin in front of eyes 

 and throat cinereous; tarsus and toes olive-gray, blackish 

 slate at joints; under side of toes and webs mouse-gray. As 

 the birds age the tip of the bill becomes darker. 



The Academy's series of flamingo skins, all from the Gala- 

 pagos Islands, numbers seventy, and includes specimens taken 

 in every month of the year except March, April, and June. 



The series of young birds is passing into the plumage called 

 by Mr. Chapman the "third or juvenal plumage."^ The 

 youngest bird matches No. 3 of Fig. 16 of Mr. Chapman's 

 paper. As the grayish-brown down disappears from the tips 

 of the feathers of the under parts, the pale pink plumage is 

 more clearly disclosed, showing many of the feathers on the 

 breast and flanks with dark shafts. By lifting the feathers 

 of the under parts, the gray downy teleoptiles can be seen. 

 The youngest bird shows these very distinctly. With the next 

 moult these become paler, and in birds fully adult are white. 

 The feathers of the upper parts, particularly the scapulars and 

 interscapulars, show wear very quickly, for even in the young- 

 est bird they are somewhat abraded. Pale pink feathers put 

 in an appearance on the head, whence they seem to work 

 by degrees down the neck, appearing here and there and giv- 

 ing it a pink-and-gray mottled appearance. At this stage the 

 scapulars and interscapulars are much worn and pointed, and 

 the primaries are developed enough to enable the bird to fly. 

 All of the young thus far mentioned were taken at James Bay, 

 August 6 to 9, showing that there must be considerable varia- 

 tion in the time of egg-laying in a colony. No. 2236, James 

 Island, December 26, is in very much worn and faded juvenal 

 plumage, but shows no signs of moult. 



Two specimens (No. 2234 from Jervis Island, December 

 18, 1905, and No. 2237 from James, December 28, 1905) 

 are moulting from the juvenal or third plumage into a fourth 

 plumage — not the full adult plumage, however, but a pink 



iBull. Am. Mus. Nat. Hist., v. 21, p. 72. 



