BIRD STUDY NUxMBER 



n6T0i;E-3TODY qeVieu 



\ Devoted to Elementary Science in the Schools 



Vol. 16 No. 4 APRIL, 1920 Whole No. 135 



One year (nine issues) SI. 00. 15c per copy 

 OFFICIAL ORGAN OF THE 



American Nature 



Photographed by Dr. R. W. Shnfeldl 



The Black Skimmer 



A (Irawinjj by Audubon 



