74 BULLETIN 50, UNITED STATES NATIONAL MUSEUM 



xii, 1931, 16 (British Columbia; Queen Charlotte Islands) .—Peters, Check-list 

 Birds of World, ii, 1934, 28 (range). 



Dendragapus fuHginosus sitkensis Swarth, Univ. California Publ. Zool., xxx, 

 1926, 81, in text (fig. of tail feathers), 84 in text.— Brooks, Auk, xlvi, 1929, 

 113 (rev., crit.). — American ORNiTHOLOcacsTs' Union, Check-list, ed. 4, 1931, 

 79 (distr.).— Bent, U. S. Nat. Mus. Bull. 162, 1932, 119 (habits; plumage; 

 etc.).— Taverner, Birds Canada, 1934, 153 in text (Queen Charlotte Islands 

 and islands of south Alaska). — Moffitt, Auk, Iv, 1938, 589, pi. 19, fig. 5 

 (downy young; col. fig.; descr.). — Hellmayr and Conover, Cat. Birds Amer., 

 i. No. 1, 1942, 199 (syn.; distr.). 



D[endragapus] fuHginosus sitkensis Swarth, Univ. California Publ. Zool., xxx, 

 1926, 74 in text (map; distr.). 



Dendragapus obscurus munroi Geiscom, Amer. Mus. Nov., No. 71, 1923, 1 (Queen 

 Charlotte Islands, British Columbia; coll. L. L. Sanford). — Oberholser, Auk, 

 xli, 1924, 593, 594 (syn.). 



DENDRAGAPUS OBSCURUS FULIGINOSUS (Ridgway) 



Sooty Grouse 



Adult 'male. — Not distinguishable from that of Dendragapus obscurus 

 sitkensis. 



Adult female. — Similar to that of Dendragapus obscurus sitkensis but 

 less reddish in general coloration, the upperparts being duller brown with 

 a great deal of black showing through and with the brownish areas every- 

 where speckled with blackish or grayish. This grayish color is predomi- 

 nant on the hindneck, upper tail coverts, rectrices, breast, and sides, and 

 to a lesser extent the flanks. The brown on the forehead varies from 

 Saccardo's umber to sepia (tawny to amber brown in sitkensis) , and the 

 brownish bars and markings on the occiput, interscapulars, and back, 

 besides being much more reduced than in sitkensis, are paler — avellaneous 

 to light pinkish cinnamon; in the tail feathers only the central pair has 

 any appreciable cinnamon-buff mottling, the other rectrices having their 

 mottlings grayish to light drab ; the feathers of the flanks, lower abdomen, 

 and under tail coverts have the white tips smaller than in sitkensis, and 

 have the upper and central abdomen slightly darker and very slightly 

 more brownish than in sitkensis. 



Immature male. — Similar to the adult but with the rectrices narrower 

 and more pointed terminally and with the body plumage often retaining 

 some of the juvenal tertials and some of the coronal and occipital feathers. 

 Practically indistinguishable from the corresponding stage of Dendraga- 

 pus obscurus sitkensis, except by such juvenal feathers as may be present. 



Immature female. — Similar to the adult female but differing from it 

 in the narrower rectrices and the retention (in some cases) of juvenal 

 tertials and head feathers. 



Juvenal (sexes alike). — Similar to the corresponding plumage of 

 Dendragapus obscurus sitkensis but less rufescent generally (sepia to 

 Saccardo's umber) ; similar to the adult female of the present subspecies 



