These two eagles spar by flapping their wings and try to intimidate each other away from a dead fish on the river bank. Spats like this one are common among scavenger species like bald eagles. Eagles generally prefer dead prey over live fish, and will not hesitate to steal food from other birds.
These fights will rarely turn serious or bloody; the eagles are sparring, not really fighting. The victor will be allowed to take the spoils with little extra fuss.
Stock Image #20141109-092947