SHEARWATERS AND PETRELS. * 87 



KEY TO THE SPECIES. 



I. Wing over 10-50. 



A. Under parts dusky 94. SOOTY SHEARWATER. 



B. Under parts white. 



a. Bill under 1-50 98. BLACK-CAPPED PETREL. 



b. Bill over 1-50. 



b 1 . Under tail-coverts white 88. CORY'S SHEARWATER. 



b 3 . Under tail-coverts grayish brown . . 89. GREATER SHEARWATER. 

 II. Wing under 10-50. 



A. Wing over V'25. 



a. Depth of bill at base over -50. . 86. FULMAR. 86a. LESSER FULMAR. 



b. Depth of bill at base under -50. 



b 1 . Upper parts bluish gray 99. SCALED PETREL. 



ft a . Upper parts sooty black 92. AUDUBON'S SHEARWATER. 



B. Wing under 7'25. 



a. Upper tail-coverts more or less white. 



a 1 . Tail forked 106. LEACH'S PETREL. 



b 1 . Tail square. 

 fe a . Webs of feet marked with yellow; upper tail-coverts not tipped 



with black 109. WILSON'S PETREL. 



b a . Webs of feet without yellow ; tail-coverts tipped with black. 



104. STORMY PETREL. 



b. Upper tail-coverts grayish or brownish. 



b 1 . Entire under parts brownish ..... 101. BULWER'S PETREL. 



b*. Breast grayish 110. WHITE-BELLIED PETREL. 



b a . Entire under parts white 111. WHITE-FACED PETREL. 



86. Fulmarus glacialis (Linn.). FULMAR; NODDY (see Fig. 9, b). 

 Light phase. Head, neck, and under parts white or whitish ; back, wings, 

 and tail slaty gray. Dark phase, Entire plumage nearly uniform dark, slaty 

 gray. L., 19-00; W., 13-04; B., 1-50; depth of B. at base, '75 (Ridgw.). 



Range. North Atlantic ; south in winter on the American coast to Massa- 

 chusetts ; accidental in northern New Jersey. 



JVest, on the ledges of rocky cliff's. Egg, one, dull white, 2*85 x 2-01. 



" The Fulmar is a constant attendant on whalers, sealers, etc. who 

 know it as the ' Mollimoke ' in order to obtain fatty substances and 

 animal offal ; but I never saw it take any while on the wing, and it 

 always settles on the water to feed, like an Albatross. The pinions 

 arc often flapped slowly in an owl-like manner, but in scudding they 

 are held very straight a peculiarity by which it may easily be distin- 

 guished from a Gull at a distance " (Saunders). 



86a. F. g. minor Kjaerb. LESSER FULMAR ; NODDY. " Similar in 

 color to F. glacialis, but much smaller. W., 11-80-12-00; B., 1-30-1-38; 

 depth of B. at base, -60--70." 



Range. " North Atlantic, south on American side to coast of New Eng- 

 land" (Kidgw.). 



