This image by Colleen Goh a.k.a. damselfly shows a single crow mobbing a White-bellied Sea Eagle (Haliaeetus leucogaster).
Crows are notorious in their boldness. They have been known to dive-bomb dangerous predator like hawks, eagles, kites, owls and even people. Screaming loudly, a few will mob a potential predator, taking turns striking it with force.
This post is a cooperative effort between NaturePixels.org and BESG to bring the study of bird behaviour through photography to a wider audience.