This is a really useful website showing how different birds and bats fly so you can see in detail the way that their wings move. However hummingbirds wings move so fast that i don't believe getting the exact movement is necessary as you won't even be able to see it.
http://www.dailymail.co.uk/sciencetech/article-2776970/Watch-fruit-bat-fly-hummingbird-hover-The-hypnotic-animations-reveal-exactly-different-animals-skies.html

The start of this video shows multiple humming birds playing together which shows how they move. Their wings are fast and the hover then move quickly then back to a hover. This movement is very specific to humming birds so i think it is important to get it right.