typhlonectes:

This is the reaction of parents ready to protect their offspring at all costs!

These greater sandhill cranes at a National Wildlife Refuge in the Western U.S. react to the approach of a bald eagle.
The bald eagle was closing in on a sandhill crane colt (juvenile) hidden
nearby. Both of the adult sandhill cranes aggressively drove the bald
eagle from the area.

Photo: Tom Koerner/USFWS