no. 7 



FLOCKS OF NEOTROPICAL BIRDS— MOYNIHAN 



27 



Tables 20 to 27 are based upon observations in the area near 

 Gamboa between July 12 and August 15, i960. Many of the birds 

 of the blue and green tanager and honeycreeper alliance appeared to 

 have just finished breeding at this time. All the data in these tables 



Table 20. — Data from observations near Gamboa between July 12 and 



August 15, i960 



The number of times individuals of some species of the blue and green tanager 



and honeycreeper alliance were seen in mixed flocks and apart from mixed 



flocks. 



No. of times 

 individuals 



seen in No. of times No. of times 



obviously individuals individuals 



integrated seen in seen not in 



Species mixed flocks mixed flocks mixed flocks Totals 



Plain-colored tanagers 96 82 178 



(54) 



Palm tanagers 3 167 78 245 



(1) (68) 



Blue tanagers 2 293 241 534 



(55) 

 Red-legged blue honey- 

 creepers 31 33 64 



(48) 

 Blue dacnises o 11 5 16 



(69) 

 Crimson-backed tanagers ... 2 93 81 174 



(1) (53) 



White-lined tanagers o 1 4 5 



(20) 

 Yellow-crowned euphonias . . 26 29 55 



(47) 

 Thick-billed euphonias 14 4 18 



(78) 

 Streaked saltators 48 62 no 



(44) 

 Buff-throated saltators o 36 35 71 



(50 



were obtained by the same methods as the data from Barro Colorado 

 Island. 



Tables 20 and 21 show how frequently the 11 most commonly 

 observed species of finches, tanagers, and honeycreepers (of the blue 

 and green tanager and honeycreeper alliance) were seen in mixed 

 flocks and not in mixed flocks, and the average number of individuals 

 of these species per mixed flock and per nonmixed flock. Very few 

 warblers were seen with blue and green tanager and honeycreeper 



