86 NATURE STUDY REVIEW [10:3— Mar., 1914 



2. Occurrence and kind (From bird chart) 



3. Dates of arrival and departure. (From chart) 



4. Size. Compared with the English sparrow (6 J inches), or 

 the robin (10 inches). Also record the length in inches. 



5. Field marks. (From chart and skins) 



6. With what birds confused; how distinguished. (Chart and 

 skins) 



7. Economic status. (From food chart) 



8. Nest and eggs. (From collection) 



A. The nest. 



Of what composed outside? With what lined? Shape, 

 depth and width in inches. (Both inside and outside) 



B. The eggs 



Color and size. (In inches — two dimensions) 



C. Date of nesting, (from chart) 

 II. Comparison of nesting houses. 



1. Note the differences as regards: 



a. material of which made; 6. size of entrance hole; c. size 

 of house; d. method of fastening; e. covering or roof; ^. 

 perch. 



2. Note the general characters in which nearly all agree as 

 regards : 



a. shape of hole; b. location of hole; c. shape of house; 

 d. projection of roof. 

 The following is offered as optional when time permits. 

 III. Study of the structure of Birds. 



A. The bills of birds. 



Compare the various kinds of bills and make a drawing of 

 each type. The following are suggested; a duck, heron, 

 sandpiper, hawk, owl, woodpecker, flycatcher, swallow, 

 vireo, warbler, creeper, thrush. 



B. The legs and toes of birds. 



Compare the various kinds of legs and toes and draw each 

 type. The following are suggested; a duck, heron, sandpiper, 

 hawk, kingfisher, woodpecker, swallow, sparrow. 

 IV. Classification of birds. (Bird families) 



Study a number of birds belonging to the same family and 

 determine the characteristics in which they agree. The 

 following families are suggested; hawks, owls, woodpeckers, 

 flycatchers, sparrows, swallows, vireos, warblers. 



