KEY TO DUCKS, (iJCESE A.N'I) SWANS OF XOKTH AMEltlCA. 23 



IJill. less tliau one inch «idc near ti]); head, lined ami speckled with brown 



and l>i-u\vnisli white; speeuhmi. tial riiftalUc ijivfii ; axillars, white, barred 



with brown ; runi|i and tail eovevts, brown, 

 naia'ouly edj^ed and handed with white; feet, 

 dusk) . Pintail Duck. 



Diilihi acuta ifi'mah'). 



Axillars. c . -i 



Isee iia"e .t1. 

 llalilM ai-ut;i. ' ■ 



Head, yellowish brown with black or brown line on naiji'; no white speculum 



or white onwiiin'; rump and tail, black; belly, tawny brown; lower belh-. 



not black; axillars, smoky black. Fulvous Tree Duck. 



Drii'lroi'ijijiia fiilfa. 

 See page '.)0. 



Head, rufus brown, with black line on nape; more or less whiii' on wing: 

 si)eculum, whitish; Ijreast, brown: lower belly, black; axillars, black. 



Black-bellied Tree Duck. 



Drudi'iirtj'jna a iii n uDialh. 

 Sei> iiage S!l. 



Hidly, white, with more or less brown spots; axillars, white; hill, less than 

 .1)0 wide at widest part. Gadwall. 



.\nas stri'i'cra ( female). 

 See page 44. 



Section 4. Hind toe with well defined membraneous lobe 

 or flap; belly, white, sometimes tinged on lower part 

 with dusky or gray ; head marked with more or less 

 white or brownish white. 



Head, brownish ; a (latcli of dull white on face at Ijase 

 of liill ; speculum, white. 



Greater Scaup Duck. 

 Blue-bill, Black-head. 



Aijthijd iiinrihi iieniTtica (female/. 

 See page .tO. 



.\ytii};! niarila iiearctica. 



Head and neck, dark glossy green ; a nearly round iiateh of wliite on check at 

 base of liill ; liack, black; sji.-.adum, white. American Qolden Eye. 



Whistler. 



(ilaucioia.'ltn rlamjala arjien'cana (m,ale). 

 See page 59. 



Head, bluish black, or purplish blue; an irregular white patcli on cheek at base 

 of bill. Barrow's Golden Eye. 



GlcmeioneUa islandica (male). 

 See page GO. 



