ARDEA. X. U>21. 



PI. IL 



Fig. G. Red-tliroated Diver on nest. Tundra Bolieman, July 21, 1921. 



Fig. 7. i;e,l-tln-,Mird liixrr nu nest. Tundra Bolieman, .July 21, 1921. 



Van Ookdt phot. 



