actually see taking ot,r chickens and not destroy ntdiscrnninately every- 
member of the hawk family. . 
rZ large hawk which you see making circles high tn the a,r prob- 
ably is the red-tailed. See if yon can distinguish the color o£ the tad. 
no listen. If the bird gives a long drawn whistle sound.ng verj. 
Lucl ike a boy whistling through his teeth, loud and exploswe at first 
Td gradually growing fainter, you may be sure that .t .s the red-ta,led 
''^""^ GREAT-HORNED OVJh— {Bubo virginianus.) 
Size large; ear tufts conspicuous, nearly two inches in length ; upper 
parts mottled with yellowish, brown and black; facial d.sk yellow.sh 
After U. S. Biological Survey. 
11 
