Hummingbirds are amazing creatures. Nature's helicopters, they hover and dart here and there at great speed.
They also have long memories. I never got around to putting out my hummingbird feeder last year. A month ago I spotted a hummingbird hovering exactly where the feeder had been, two years earlier. Of course, I put the feeder right out, and it's been busy with little birds ever since.
Here's a male ruby-throated hummingbird, hovering next to the feeder:
This is a female, coming in for a landing:
The female, again, ready to start sipping nectar:
Mission accomplished, maximum effort climb out!