294 Birds of Oregon and Washington 



In autumn and spring, study again and more 

 objectively, " Migration." In the same months, 

 observe Transient Birds, that is, birds that nest 

 north of us and that can be seen only as they 

 pass through our State in the spring and 

 autumn, — such as the Golden-Crowned Spar- 

 row, the Dwarf Hermit Thrush, et al. 



In winter. Bird-food should be studied again, 

 with reference to the usefulness of birds. The 

 relation of birds to insect-life and to weeds ; 

 relation of the bills of the different species to 

 different kinds of food, — the Finches to seed, 

 etc. 



Classification of birds in families, — e.g. Wood- 

 pecker Family, Thrush Family, etc. 



Bird Structure, Coloration, and other such 

 topics may be taken up. In the Bird-months, 

 March, April, May and June, notice particularly 

 the songs of birds. The different quality in 

 different species ; the different songs in the 

 same species, — for instance, the very great 

 variety in the Western Meadowlark ; the differ- 

 ent quality of voice in individuals of the same 

 species. Write down, if you can, some of the 

 songs of birds. 



