160 



main line seemed to arrive from tlie northeast and from no other direc- 

 tion. But, to our sui-prise, on our way home after leaving the valley, it 

 was discovered that the crows from the northwest were flying southeast 

 on a tangent with the valley and alighting in the trees and tlelds to the 

 east; then turning at almost right angles they flew over the hill down into 

 the valley Avhere the roost was. Was this purposely done for protection? 

 In conclusion the main things to be noted are the bending of the line 

 when men are seen; the signaling of danger to the oncoming line; that 

 the crows never approached the roost directly and that they only roosted 

 on the hillside during the coldest weather. 



