Plate 27 



Upper: Nest and eggs of Aleutian sandpiper. 



Lower: Downy young of Aleutian sandpiper. Both photographs 

 taken by Mr. Alfred M. Bailey at Emma Harbor, Providence Bay, 

 Siberia, July 4, 1921, presented by him and by courtesy of the 

 Colorado Museum of Natural History, referred to on page 162. 

 386 



