They are a species of bird found in all three states at the time of Red Dead Redemption. Crows can be shot and killed as part of the bird-related Sharpshooter Challenges. Their feathers can be plucked from their bodies after they fall to the ground to be sold for cash.
Like all birds, animals, and people, crows become an x on the minimap when Marston kills them (if he is in the proximity).
The player must kill a crow to contribute to the successful completion of the following achievement/trophy:
Kill every animal species in the game in any game mode.