94 THE WILSON BULLETIN— June, 1921 



Crested Auklet, until able to fly, about the last of August or 

 later (Bent, lb., 122.) 



Whiskered Auklet, until fully fledged (Bent quoting Stejneger, 

 lb., 125.) 



Least Auklet, data seems to indicate 4 or 5 weeks (Bent, lb., 

 180.) 



Black Guillemot, about 25 days (Bent quoting Walker, lb., 

 208); for a long time, until fully fledged or nearly so (Bent, lb., 

 159.) 



Mandt's Guillemot, develops slowly (Bent, lb., 164.) 



Pigeon Guillemot, until fully fledged (Bent quoting Emerson, 

 lb., 170.) 



Dovekie, the young begin hatching about the middle of July 

 and the first birds come off the nests about the middle of August 

 (Bent quoting Ekblaw, lb., 218.) 



DIOMEDEID^: 



Laysan Albatross, 6 months before flying (Fisher, Auk, xxi, 19.) 



PORCELLARIID^: 



Audubon's Shearwater, large downy young (Plath, Bird-Lore, 



XV, 349.) 



Storm Petrel, until fully fl^edged and able to fly (Macgilllvray, 



History of British Birds, v, 468.) 



Leach's Petrel, possibly 60 days or more (Knight, Journal 



Maine Ornithological Society, ii, 5.) 



Black Petrel, more than 14 days (Van Rossem, Condor, xvii, 77.) 

 Soccoro Petrel, same as Black Petrel (Van Rossem, lb.) 

 Fork-tailed Petrel, nearly full gi-own (Willett, Bd.-Lore, xiv, 



423.) 



PHAETHONTID^: 



Yellow-billed Tropic Bird, about 60-62 days (Gross, Auk, xxix, 

 60; Plath, Wilson Bulletin, No. 95, 50.) 



SULID^: 



Booby, approximately 3 months from laying of egg to flight 

 of young (Chapman, Camps and Cruises of an Ornithologist, 217.) 



Gannet, appears to remain in the nest for ten weeks, and after 

 that it stands on its ledge, or even on its old nest, for two or three 

 weeks more (Gurney Ms.) 



ANHINGID^: 



Anhinga, bom naked, will jump from the nest to the water, 

 dive and swim, at a very early age, not over three weeks, but often 

 stays in the nest or close by for eight or nine weeks, as near as 

 I have noted (Bayard Ms.) 



PHALACROCORACID^: 



Cormorant, apparently considerably over a month (Audubon, 



