Lost, or exploring?
I saw a crow flying far off course, all by itself.Sometimes, like people do, animals go exploring on purpose, discovering new resources and opportunities.Other times, like people, they just get plain lost.This crow seemed lost, because it was making distressed sounds.When animals find new locations to establish their species, and do so in pairs or small populations, entire new species can develop to take advantage of the opportunities and resources of those new locations.