Home Life of the Brown Thrasher. 



85 



Table III— (Continued). 



Date— June 23 2i 26 



Wireworms 



Ants 



Caterpillars . 1 



Flifes 1- 1 2 



Damselflies 



Dragontlies 1 • 3 



Butterflies 1 . 1 



Crickets 3 



Green Worms 8 5 



Cutworms 12 5 20 



Centipedes 2 



Moths 28 13 4 



Mayflies G 27 5G 



Beetles 3 G G 



Grasshoppers 31 41 35 



5 

 10 

 1 

 1 

 1 

 13 

 1 



48 



139 

 79 

 12 

 81 



28 

 6 

 7 

 1 

 1 

 2 



1 

 1 

 1 



18 



48 

 244 



8 



29 Totls. 

 11. 

 17. 

 3. 

 6. 

 3. 

 18. 

 4. 

 6. 

 15. 

 103. 

 2. 

 237. 

 425. 

 38. 

 247. 



Daily Totals 



.lOG 104 143 443 432 



32 12G0. 



This table, which covers only a period of fifty-six and a 

 fraction hours, shows a total of twelve hundred and forty- 

 four insects (excepting a few worms) consumed by this one 

 family of young- birds in that time. This does not, of course, 

 include anything eaten by the parents. As it was found that 

 the working day for the parents began at 4 :15 a. m. and closed 

 about 8:30 p. m., a period of about sixteen hours, it will be 

 seen that the period of fifty-six hours, during which the nest 

 was under observation, was only a fraction of the total num- 

 ber of feeding hours. The young birds were in the nest from 

 June 17 to June 29, a period of twelve days; but as they left 

 on the morning of the 29th, we will omit that day from the 

 total, leaving a period of eleven days for the nestling period. 

 These eleven days represent one hundred and seventy-six 

 feeding hours — over three times the period during which the 

 birds were imder observation. Computing the total number 

 of insects eaten by the nestlings on the basis of the food con- 

 sumed during the fifty-six hours, we have a total of 3800. 

 While this number seems large, it must be borne in mind that 

 the possible lower food requirement of the first half of the 



