How do dominant condors establish priority over a food source when encountering other scavengers?

Answer

Through threat displays like standing erect and lunging

Dominant birds assert priority using threat displays which include standing erect, inflating air sacs on the head and neck, opening the bill, and lunging.

How do dominant condors establish priority over a food source when encountering other scavengers?
behaviorbirdaggressionwildlifecondor