Bird Clubs 293 



be in full song and easily observed. After the 

 birds have settled in their summer quarters, each 

 adult male may safely be taken to represent 

 a breeding pair. No bird should be counted 

 unless he is actually within the boundaries of 

 the area, no matter how near the boundary he 

 may be. The census of the first day should not 

 be taken as final. It should be checked by 

 several days of further observation to make sure 

 that each bird counted was actually nesting 

 within the area, and also to make sure that 

 no species has been overlooked. The census 

 should be sent to the Chief of the Bureau of 

 Biological Survey, Washington, D. C, about 

 the 30th of June, and with it should go such a 

 careful statement of the exact boundaries of the 

 area selected that it would be possible twenty- 

 five years hence to go right to the place, cover 

 exactly the same ground, and repeat the census. 

 The name and address of the owner of the 

 property should also be given in every instance. 

 In the case of Census A, the observer should 

 send, in addition, a careful description of the 

 character of the land, tell whether the area is 

 dry upland or swampy bottom land. He should 

 give the number of acres in each of the principal 

 crops, — in permanent meadow, pasture, orchard, 

 swamp, and road and whether there are streams 



