We've been watching hummingbirds this week. Lately, we have six or more visiting the feeders at regular intervals. They spend more time chasing each other than anything else, but the feeders are still emptying quickly.
Last night, it looked and sounded as though we had a swarm of very large hornets. There were at least eight hummers circling the feeders. I heard a sharp smack when one of them lunged at another and connected. Neither seemed stunned or otherwise discouraged.
Such strange little birds--stumpy wings and awkward squawks juxtaposed with those irridescent feathers and delicate bills.