Queuing up at the hummingbird feeder
The hummingbird that’s at the feeder is very possessive and will drive off anybody who tries to belly up to the bar while (s)he’s there. So all this other hummingbird can do is hover there and flap impatiently.
The hummingbird that’s at the feeder is very possessive and will drive off anybody who tries to belly up to the bar while (s)he’s there. So all this other hummingbird can do is hover there and flap impatiently.