LAMELLIROSTRAL SWIMMERS 



147. CANVAS-BACK. Marila valisineria. 



Range. Whole of North America, breeding 

 chiefly in the interior from the United States to 

 the Arctic Ocean. 



A noted table bird, especially in the south 

 where it feeds on wild celery. Can be distinguish- 

 ed from the Redhead by its darker head, lighter 

 back, and gradually sloping bill. They nest abund- 

 antly in Manitoba, their habits being the same as 

 the preceding. They lay from six to ten eggs of 

 a darker shade than the Redheads. Size 2.40 x 

 1.70. Data. Haunted Lake, N. Alberta, June 12, 

 1897. Ten eggs. Nest of reeds in a heavy reed 

 bed out in the lake. Collector, Walter Raine. 



1 18. SCAUP DUCK. Marila marila. 



Range. North America, breeding from North 

 Dakota northward, chiefly in the interior; south 

 in winter to Central America. 



Canvas-hack 

 American Scaup Duck 



Pale greenish gray 



This and the following species are widely known 

 as "Blue-bills" owing to the slaty blue color of 

 that member. Their plumage is black and white, 

 somewhat similar in pattern to that of the Red- 

 head, but darker, and the whole head is black. 



They nest, in marshes about many of the ponds and lakes in the interior of 

 British America. The nest is made of marsh grasses and lined with feathers. 

 The six to ten eggs are pale grayish or greenish gray. Size 2.50 x 1.70. Data. 

 Saltcoats Marshes, N. W. Canada, June 15, 1901. Ten eggs. Nest in the grass; 

 a depression lined with down and dried grasses. Collector, Walter Raine. 



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