FULMARS AND SHEARWATERS 37 



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



Size small ; l)ill lelativi'ly small and slender ; plumage sooty or blackish 

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

 Wing: lO.UO-Il.lO, tail ;J.20-.'].<)0, bill 1.20-1.28, depth at base .:]5-.rj0, 

 tarsus 1.90-2.00. 



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

 mig'rating north in summer to Kotzebue Sound. 



The slender-billed shearwater w^as discovered at Monterey by Mr. 

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

 month he saw ij^reat numbers of the birds, and secured twenty speci- 

 mens. Mv. Loomis infers that they w-ere 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. ;>7. 



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

 r. Upper and lower tail coverts dusky. 



2. Under wing- coverts with a light-colored patch . hoiliochroa, 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 li.i;ht ])liiish gray, fading to white on chin, throat, and under tail 

 coverts; bend of wing, (juills, and space around eve. duskv. Length: 

 8.00-9.20, wing .') 90-().40, l,ill .00, tail 3.7.')-4.O0. forked for about 1. 



Distribution. — P^-om the Arctic circle .south on the American side to 

 Monterey. 



Nfst. — A hole in a bank, lined scantily with dry gntss and fine roots. 

 Eg;/ : 1. white, with line spots of lilac and dark color about the larger end. 



1052. Oceanodroma kaedingi .l/fMo/i//. Kaedino Petrel. 



Plumage niuinly sooty black : wing cov- 

 erts brownish ; upper tail coverts and side 

 of under coverts, white. Wimj: 'k"). tail 

 3.2"), forked f<»r .00, tarsus .SO, i)ill ..').", (from 

 type). 



Distribution. — Pacific coast and islands from Soc<u-ro Island and south- 

 ern California north to Cape Flattery. 



Nist. — I'nder a jiih; of stones, or a burrow in a turfv bank, lined with 

 gra.ss, bits of l);irk, and wood. /v/.'/-" '• sometimes plain white. 



The slightly larger and lighter colored O. fi t/mr/ioa of the .\tlantic 

 and north I*aci(ic a|)|)ar('ntly <lo('s not occur on the west coast of the 

 I'nited States. A series of .May and June speeiniens from near Cape 

 i'^hittery are iin(|ueslionably l.iinliiigi. 



