Magpies in the US tend to be opportunists, too.
They're not found around here, though. I'd have to go further north and west.
The master-hoverers around here are the hummingbirds, which hover to drink nectar and can fly in any direction (including reverse). North American flycatchers, on the other hand, are for the most part drab little guys that gather insects by hawking. They can hover, but only for a brief amount of time, usually only as they grab an insect and are about to fly back to the perch they're hawking from. And most of the smaller species all look alike--they're the devil to try to identify unless they're vocalizing.