BLACK-BELLIED TREE DUCK 



3. Dendrocygna autumnalis (Linnaeus) 

 Black-bellied Tree Duck. "Wichity" 



Length about 555 mm. (22.00 in.); tail about 

 102 mm. (4.00 in.). 



Sexes alike. Adult. Head, neck, chest and 

 upper parts reddish brown, abdomen black, 

 under tail coverts white spotted with black. 

 Bill red. Neck and legs rather long. 



Young. Colors duller, the reddish brown re- 

 placed by dingy grayish tinged with rusty; bill 

 and feet dusky. 



This native species is the commonest duck on 

 the marshes and rivers of the Canal Zone and 

 neighboring parts of the Republic, and is the 

 species that the sportsman most often obtains. 

 It has a call resembling the syllable wichity, 

 wichity, which gives it the name by which it is 

 commonly called. It nests in and often perches 

 on trees, as the name "tree duck" indicates. The 

 species of this genus, show in their long neck and 

 legs, the form of the bill and other characters, a 

 nearer relationship to the geese than the ordinary 

 ducks, though they are of small size. 



4. Anas platyrhynchos Linnaeus 

 Mallard 



Adult male. Length 572 mm. (22.50 in.); 

 tail 102 mm. (4.00 in.). Head and neck glossy 

 green, breast chestnut separated from the green 

 by a white collar, back dark brownish gray shad- 

 ing to black on tail which is white-bordered; 

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