What aggressive handling technique does the Kiskadee use for larger or slippery prey?

Answer

Repeatedly striking the prey against a rough surface like a rock or branch.

The bird employs a technique sometimes called 'fish-dunking' or 'beating,' where it repeatedly strikes the captured prey against a hard surface.

What aggressive handling technique does the Kiskadee use for larger or slippery prey?
birdcharacteristicKiskadee