52 



Bulletin No. ij. 



grounds or at the roost, as the case might be, was more like the middle 

 figure, because the flock had the habit of resting on the installment plan 









^^!:^50^?S 





o !'."•**••"' 







. -■ \ &£*#£"""w K& : ".' : V; : . vk~ :;&*- W: ; 



;:^\vi^» 



"' ''- ' : * v '" •* " " * v,: ^'v : :^-'- v^ ^ -^ v£ 



> ■-* ■'"• - f ~- *r?'Vv*.*i vj.V'o-'.*"«. ,: -«** 





-'..'-.."* >1 Jr-.".- •«l;;..-/i/' 



v .• ,, •«.» / •.,-< :. ."- - '.-/, 







* * — .~> §■— 























i 



FORMS ASSUMED BY THE GRACKLE FLOCKS, SEPTEMBER, 1896. 



when passing to and from the roost, and so would become more and 

 more drawn out and broken up as it proceeded. The van-guard would 

 stop in some tjree-top and rest until the others had passed over, when it 



