Nesting Behavior of the Yellow Warbler. 



53 



Feeding. 



The feeding of the nestling's was carried on by both male 

 and female parent birds. As is shown in Table I, during 

 the first four full days of observation, the male bird made 

 more feeding visits than did the female, but on the following 

 day the female outworked the male in this respect. However, 

 during the remaining days it was impossible to follow this 

 comparison because the male discontinued all feeding visits 

 on July 8, immediately following the snake incident. 



Table I. 



Showing exact periods of obser 



vation 



and totals of 



feedin 



g vis- 



its of tlie parents by days. 















Day Time 





Hours 



Min. 



m 



f 



Total 



July 2 — 4 :15 p. m.-7 :40 p. 



m 



3 



25 



21 



24 



45 



July 3— -4 :20 a. m.-8 :30 p. 



m 



16 



10 



136 



91 



227 



July 4—4 :20 a. m.-8 :30 p. 



m 



16 



10 



106 



94 



200 



July 5—4:15 a. m.-8:10 p. 



m 



15 



55 



127 



114 



241 



July 6 — 4 :32 a. m.-7 :35 p. 



m 



15 



3 



151 



131 



282 



July 7—4 :10 a. m.-8 :25 p. 



m. . . . 



16 



15 



155 



189 



344 



July 8—6 :20 a. m.-8 :48 p. 



m. . . . 



14 



28 



117 



161 



278 



July 9—6 :30 a. m.-8 :10 p. 



m. . . . 



13 



40 





264 



264 



July 10—4 :30 a. m.-8 :47 p. 



m . . . . 



16 



17 





221 



221 



July 11—4 :25 a. m.-7 :45 p. 



m 



15 



20 





238 



238 



July 12—4 :20 a. m.-6 :30 a. 



m. . . . 



2 



10 





33 



33 



Total 





144 



53 



813 



1560 



2373 



During the first three or four days when the female was 

 brooding, usually the male gave her the food, which she dis- 

 tributed to the nestlings. But there were times when the 

 male ignored the outstretched bill of the female and fed the 

 young himself. She would also, on some visits, move to one 

 side of the nest and allow the male to feed the young. Again 

 there were several times that the male gave part of the food 

 to the female and then both the parent birds distributed their 

 shares to the nestlings. On one occasion (visit No. 1584) the 

 male fed a fly to one of the nestlings, but the female imme- 

 diately took the fly from the young and ate it herself. When 



