FULMARS AND SHEARWATERS 
37 
98. Puffinus tenuirostris ( Temm .). Slender-billed Shearwater. 
Size small ; 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 3.20-3.60, 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 14tli and 20th of the 
month he saw great numbers of the birds, and secured twenty speci¬ 
mens. Mr. Loomis 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 gray. furcata, p. 37. 
2'. Upper, and sides of lower tail coverts, white . . kaedingi, p. 37. 
V. Upper and lower tail coverts dusky. 
2. Under wing coverts with a light-colored patch . homochr.oa, 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 (Gmel .). Forked-tailed Petrel. 
Body light bluish gray, fading to white on chin, throat, and under tail 
coverts; bend of wing, quills, and space around eye, dusky. Length: 
8.00-9.20, wing 5.90-6.40, bill .60, tail 3.75-4.00, forked for about 1. 
Distribution. — From the Arctic circle south on the American side to 
Monterey. 
Nqst. — 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 Anthony. 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 .60, tarsus .80, bill .55 (from 
type). 
Distribution. — Pacific coast and islands from Socorro Island and south¬ 
ern California north to Cape Flattery. 
Nest. — Under a pile of stones, or a burrow in a turfy bank, lined with 
grass, bits of bark, and wood. Egg: 1, sometimes plain white. 
The slightly larger and lighter colored 0. leucorhoa of the Atlantic 
and north Pacific apparently does not occur on the west coast of the 
United States. A series of May and June specimens from near Cape 
Flattery are unquestionably kaedingi . 
Fig. 58. 
