In this video published by Newzulu, this time it is a kangaroo to take it out on the flying intruder. We are in New South Wales, Australia, and what you see is a small herd of eastern gray kangaroos (Macropus Giganteus). A kangaroo mother realizes the noisy presence of the drone and to protect her baby she attacks him and puts him knocked out
According to the government of New South Wales, this type of kangaroo is not particularly aggressive, but breaking into its natural habitat can be dangerous. If the kangaroo feels attached it can defend itself by using its front legs (as in the video), or by kicking from a sitting position. Injuries, however rare, can still be serious.
Better to be careful then, and avoid drawing their attention or approaching too directly, unless you want to end up like the unlucky drone.