Answer:
The correct answer is 'boomerangs'.
Explanation:
Aborigines threw boomerangs into the air to wound or kill birds and bats during hunts.
Aborigines were the people who belonged to the Aboriginal race of Australia and they used boomerangs to kill the birds and bats during hunting.
A boomerang is a tool which is used to throw in the air and is designed in such a way that it spins about an axis at a right angle to the direction of its flight.