Fig. 29. Nighthawk— a perclier in the open, on lichen- 

 freckled rocks, tree boughs, etc. Near-ground-pictnring of the 

 minutest type (based, of course, on obliterative shading.) 



Photographed from life by J. E. Seebold. 



Fig. 30. Nesting Nighthawk. [C£ Fig. 29.] 

 Photographed from life by Ora K. Knight. 



