When Remmick first lands outside the Hogwood nephew’s home, there are no birds to be seen. After managing to get inside, as the Choctaw approach you can see vultures have begin to circle – and by the time the Indian forces leave, the vultures have fully landed on top of the home.
This is because Remmick is undead, and has also probably already slaughtered the Hogwood nephew as well, creating more corpses for the vultures
by Slavin92