Bui. 793, U. S. Dept. of Agriculture. 
Plate I. 
«rf?%» % 
Fig. I —Mallard with Lead Poisoning. 
The carpal joint of the wing is affected, simulating "wrist drop," and the bird has difficulty 
in walking. 
■ :■■ 
Fig. 2— Pintail with Lead Poisoning. 
Paralysis of the legs renders the bird unable to stand. 
