102 WILD ANIMALS OF (iLAClER NATIONAL PAEK. 



nized, its identitication ayus as unmistakable as if tlie specimen had 

 been collected and preserved. While it flew freely and seemed perfectly 

 at home in the bright light, it probably had been driven from its roost 

 among the leaves of some cottonwood tree on the shore by the campers 

 along the lake. These bats have rather large eyes, and their evening 

 flight begins usually a little earlier in the dusk than that of most 

 bats, l)ut the habit of flying in broad daylight is certainly not com- 

 mon with them and probably means that they ha^"e been disturbed 

 in their roosting places. Usuallj' during the day they hang head 

 downward in some dense cluster of leaves where well concealed, but 

 where the light is not wholly excluded, as in the hiding places of 

 most of our northern bats. While never abundant, they are a wide- 

 ranging boreal species, breeding usually in the Canadian Zone and 

 migrating southward in winter over practically the whole United 

 States. 



