28 



SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I43 



Table 21. — Data from observations near Gamboa bettveen July 12 and 



August 13, i960 



The number of times certain species of the blue and green tanager and honey- 

 creeper alliance were seen in mixed flocks and apart from mixed flocks, and the 

 average number of individuals of each of these species per mixed flock and per 

 nonmixed flock. 



No. of No. of 



times times 



species species 



seen in seen not 



mixed in mixed 



Species flocks flocks 



Plain-colored 



tanagers 46 35 



Palm tanagers ... 85 47 



Blue tanagers 147 138 



Red-legged blue 



honeycreepers . . 20 19 



Blue dacnises 7 3 



Crimson-backed 



tanagers 62 51 



White-lined 



tanagers 1 4 



Yellow-crowned 



euphonias 18 17 



Thick-billed 



euphonias 9 2 



Streaked saltators. 40 58 

 Buff-throated 



saltators 29 29 



Percentage Average Average 



Total No. of times No. individ- No. individ- 



times species uals per uals per 



species seen mixed nonmixed 



seen mixed flock flock 



8l 

 132 

 285 



39 

 10 



113 



5 

 35 



11 

 98 



58 



57 

 64 



52 



5i 

 70 



55 

 20 



5i 



82 



4i 



50 



2.09 

 1.96 

 1.99 



i-55 

 i-57 



1-50 



1. 00 



1.44 



1-55 

 1.20 



1.24 



2-34 

 1.66 



i-75 



1.74 

 1.67 



1-59 



1. 00 



1.71 



2.00 

 1.07 



1.21 



Table 22. — Data from observations near Gamboa bchveen July is and 



August 15, 1060 



Unambiguous interspecific following reactions by tanagers and finches. (No 

 honeycreepers or warblers were seen to perform unambiguous interspecific fol- 

 lowing reactions in this area during this period of observation.) 



