FULMARS AND SHEARWATERS 37 



96. Puffinus tenuirostris (Temm.). Slender-billed Shearwater. 



Size snuill ; bill relatively small and slender ; plumage sooty or blackish 

 except for paler throat and white under wing- coverts ; bill and feet dusky. 

 Wing: 10.00-11.10, tail 3.20-8.60, bill 1.20-1.28, depth at base .35-.50, 

 tarsus 1.90-2.00. 



Distribution. — Pacific Ocean, breeding in the southern hemisphere, but 

 migrating north in summer to Kotzebue Sound. 



The slender-billed shearwater was discovered at Monterey by Mr. 

 Joseph Maillard, December, 1895. Between the 14th and 20th of the 

 month he saw great numbers of the birds, and secured twenty speci- 

 mens. Mr. Loomls infers that they were belated migrants on their 

 way back to their breeding grounds in the southern hemisphere. 



GENUS OCEANODROMA. 



General Characters. — Bill small and weak, with nasal tubes elevated at 

 tip ; tail slightly forked ; size small ; slender and tern-like ; bill and feet 

 black. 



KEY TO SPECIES. 



1. Upper or lower tail coverts white. 



2. Lower tail coverts white, upper g'ray furcata, p. 87. 



2'. Upper, and sides of lower tail coverts, white . . kaedingi, p. 37. 

 1'. Upper and lower tail coverts dusky. 



2. Under wing' coverts with a light-colored patch . homochroa, p. 38. 

 2'. Under wing coverts without light patch. 



3. Side of rump with gray or whitish patch . socorroensis. p. .38. 

 3'. Side of rump without gray or whitish patch . . melania, p. .38. 



105. Oceanodroma furcata (Gmei). Forked-tailed Petrel. 



Body light bluish gray, fading to white on chin, throat, and under tail 

 coverts; bend of wing, quills, and space around eve, dusky. Length: 

 8.00-9.20, wing 5.90-(i.40, bill .00, tail 8.75-4,00, forked for about 1. 



Distribution. — From the Arctic circle south on the American side to 

 Monterey. 



Nest. — A hole in a bank, lined scantily with dry grass and fine roots. 

 Egg : 1, white, with fine spots of lilac and dark color about the larger end. 



105.2. Oceanodroma kaedingi Antkoiui. Kaeding Petrel. 



Plumage mainly sooty black ; wing cov- 

 erts brownish ; upper tail coverts and side 



of under coverts, white. Wing: 5.75. tail 



3.25, forked for .00, tarsus .80, bill .55 (from ^j 



*yp^)- ... . '^' 



Distribution. — Pacific coast and islands from .*^ocorn> Island and south- 

 ern California north to Cape Flattery. 



Nest. — Under n, pile of stones, or a burrow in a turfy bank, lineil with 

 g^asa, bits of bark, and wood. Egg: 1, sometimes plain wlnte. 



The sliglitly larger and lighter colored (). leucorJuyaoi the Atlantic 

 and north Pacific apparently does not cx'cur on the west coa.st of the 

 United States. A series of ^lay and June specimens from near Cape 

 Flattery are unquestionably kaedingi. 



