terrorbird, aka Axebeak did exist during ice-age era.
they are dangerous, and they are loners, they ruled both america continents until migrating packs of wolves discovered land-bridge from russia/asia, and wolves won and forced those terrorbirds into extinction.
we can find those fossils or bone fragments.
those terrorbirds came in all sizes, large as turkeys and often bigger than moa, ostrich, and emu.
i assumed they were even called as dodo but different bird variety.