Bull. 1145, U. S. Dept. of Agriculture. 



Plate 



Fig. I.— Mouth of Bear River, Utah. 



View across marshes and mud flats near northern end of Great Salt Lake. 



Fig. 2.— Sick Ducks at Laboratory Pen. 



Many of these recovered in a few days and were released, each bearing a numbered band on 

 one leg. (Photograph taken near mouth of Bear River.) 



