{"fact":"Crows are resourceful and adaptable, with some observed traveling over 30 km to access human food sources like dumps or farms.","context":"...we also documented use of food resources by crows and ravens traveling >30 km to access these food resources.","source":"John M. Marzluff; Erik Neatherlin, Corvid response to human settlements and campgrounds: Causes, consequences, and challenges for conservation, 10.1016/j.biocon.2005.12.026","index":136}