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THE AUDUBON BULLETIN 



Inasmuch as the data concerning brown thrasher nests was more easily 

 obtained, the following statistics are of more significance than those con- 

 cerning the robin. Of the thirty nests, three were destroyed during the 

 egg-laying period, one before any eggs were deposited in it and the other 

 after two eggs had been laid. 



In these nests there were seventy-three eggs, fifty of which hatched, 

 forty-three young birds successfully leaving the nest. 



MOURNING DOVE 



Of the twenty-nine mourning dove nests found on the campus, five were 

 destroyed before any eggs were placed in them. Two eggs were found in 

 each of twenty-two of the remaining twenty-four nests. In the other two 

 nests there was one egg each. 



The first date on which a nest was found with eggs in it was April 20, 

 and the last date was July 20. There was a wide range as regards the 

 nesting site. Two nests were on the ground, some were on horizontal limbs 

 of trees, some were in crotches of trees, some were platforms placed on 

 many fine twigs, and two were built in deserted robin nests. The writer 

 has seen mourning dove nests in deserted bronzed grackle nests and one in 

 a deserted brown thrasher nest. Judging from the nests of this species 

 on the campus, the mourning dove seems not yet to have found out the 

 meaning of nest sanitation. Of the forty-six eggs laid in the nests, thirty- 

 seven were destroyed before they hatched and of the nine hatched, one 

 died before it was old enough to leave the nest. 



CATBIRD 



From the point of view of successfully rearing the young to the age of 

 being old enough to leave the nest, catbirds seem better fitted to our campus 

 environment than either of the above species. These birds were found 



