The birds that are most commonly associated with death include: the phoenix, crows, owls, ravens, and blackbirds. Just because these birds are associated with death as a symbol, the do not necessarily convey a bad omen.

What bird is known for death?

Ravens are often seen as symbols of death on battlefields. They swarm over bodies to eat the decaying flesh, carrion, of dead soldiers.

Which bird is a symbol of bad luck?

Like crows, magpies are often associated with all things evil and you can read more about the superstitions that surround magpies here.