THE BIRD-WATCHER'S GTHDE. 13 



such as erecting feathers, snapping the mandibles, and 

 hissing, 



4. Play. — Exact description of anything in the nature 

 of play. 



5. Locomotion. — A comparative study of various 

 species in respect to the character of their flight, move- 

 ments on the ground, and in or under water. 



6. Mortality. — Examples to show the various ways 

 in which birds may lose their lives. 



7. Food. — Record of food of species month by month, 

 based upon examination of the crop or stomach or 

 regurgitated pellets. 



