Plate 31 



Upper: Nests of great blue heron, Yellowstone River, Montana, Jnne 29, 1905, 

 probably treganzai, presented by E. S. Cameron. 



Lower: Nest and eggs of great blue heron, Skull Creek, Saskatclicwan, June 5, 

 1905, a photograph by the author, rc^feired to on page 105, 

 4 It) 



