DARTERS — CORMORANTS 
39 
coverts without light-colored patch, hut rump with gray or whitish patch 
on side. Wing : 5.80-6.38, tail 3.07-3.42, forked for .71-.92, bill .5S-.65. 
Distribution. — From islands of western coast of Mexico north to San 
Diego, California. 
ORDER STEGANOPODES: TOTIPALMATE 
SWIMMERS. 
(Families Anhingidje, Phalacrocoracule, Pelecanid^e, 
FREGATIDiE, ETC.) 
FAMILY ANHINGIDiE: DARTERS. 
GENUS ANHINGA. 
118. Anhinga anhinga (Linn.). Anhinga. Water Turkey. 
Bill straight and sharp ; form extremely slender, tail long and rigid, 
without upper coverts. Adult male in breeding plumage: glossy greenish 
black ; back of head and sides of neck with long white or grayish filaments, 
and back of neck with black hair-like mane; shoulders and base of wings 
finely spotted with gray, wing crossed with wide gray band ; back striped 
with pearl gray ; tail tipped with brownish. Adult male in winter: head and 
neck without elongated filaments. Adult female in breeding plumage: 
similar to male but head and neck brown, throat and breast buffy. Young: 
lower back, tail, and quills black; head and rest of body brown except for 
buffy or whitish throat and breast, and gray streaking on wing coverts. 
Length : 32.25-36.00, wing about 14, tail 11, bill 3.25. 
Distribution. — From tropical America north in Lower Sonoran zone to 
South Carolina, southern Illinois, Texas, western Mexico, and casually to 
Kansas. 
FAMILY PHALACROCORACIDiE: CORMORANTS. 
GENUS PHALACROCORAX. 
General Characters. — Bill slender and abruptly hooked at tip; mouth 
opening back under eye; skin around eye and at base of lower mandible 
naked; head smooth or variously crested. 
KEY TO SPECIES. 
1. Gular sac convex or truncate at posterior edge. 
2. Gular sac bordered with jiarrow line of white feathers. Size small. 
mexicanus, p. 41. 
2'. Gular sac not bordered with white. 
3. Crest over each eye black. dilophus, p. 40. 
3'. Crest over each eye partly white. 
4. Size large, wing over 13. N. W. coast . . cincinatus, p. 40. 
4'. Size smaller, wing under 13. California coast. 
albociliatus, p. 40. 
1'. Gular sac heart-shaped at posterior edge. 
2. Flanks without white, head not crested penicillatus, p. 41. 
