FULVOUS TREE DUCK. 



178. Dendroc\gna bicolor. 22 in. 



Head, neck and under parts bright buff. 

 Back chiefly black, with buff edges to the 

 feathers. A black line down the back of the 

 neck. 



Nest. A feather-lined cavity in a tree. 

 Ten to fifteen pure white eggs. As many as 

 thirty-two have been found in one nest, prob- 

 ably laid by two birds. 



Range. Breeds south from Tex. and 

 southern Cal. Casual in La. 



WHISTLING SWAN. 



180. Olor columbiana. 54 in. 



Pure white. Bill black with yellow spot in 

 front of eye. Nostril nearer to tip of bill 

 than to eye, which distinguishes it from 

 Trumpeter Swan, a more western species. 



Note. Peculiar flageolet-like tones. 



Range. Breeds on Arctic islands. Win- 

 ters south from Mr. and Lake Erie. 

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