{"fact":"While crows react to lasers by flying away initially, they tend to return within minutes, showing no lasting effect.","context":"Crows perceived and reacted to the laser beam, in most cases by immediately leaving the roost. However, there was no lasting effect as crows returned in most cases within a few minutes and reoccupied the roosts.","source":"W. P. Gorenzel; B. F. Blackwell; G. D. Simmons; T. P. Salmon; R. A. Dolbeer, Evaluation of lasers to disperse American crows, Corvus brachyrhynchos, from urban night roosts, 10.1080/09670870210151689","index":127}