THE BIRD BOOK 
149. Lesser Scaup Duck. Marila affinis. 
Range.- — North America, breeding from North 
Dakota and British Columbia northward; win 
ters south to Central America. 
This Duck is distinguished from the preceding, 
chiefly by its size which is about two inches less, 
or 17 inches in length. The nesting habits are 
the same as those of the Greater Scaup and the 
eggs are similar but smaller. Size 2.25 x 1.55. 
Data. — Northern Assiniboia, June 10, 1901. Ten 
eggs on grass and down at the edge of a lagoon. 
Collector, Walter Raine. 
150. Ring-necked Duck. Marila collaris. 
Range.- — North America, breeding in the inter- 
ior, from North Dakota and Washington north 
ward. Winters from Maryland on the east and 
British Columbia on the west to Central America. 
Lead gray 
Similar to the Lesser Scaup in size and plum 
Lesser Scaup Duck age, except that it has a narrow chestnut collar 
around the neck, the back is black instead of 
barred with white, and the speculum is gray instead of white. The habits and 
nesting habits of the Ring-neck do not differ from those of the other Scaups. 
They lay from six to twelve eggs. Size 2.25 x 1.60. Data. — Cape Bathurst, 
N. Y. T., June 18, 1901. Ten eggs in a slight hollow in the moss, lined with 
down. Collector, Captain Bodfish. 
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