PHDID YOU KNOW? 
Hummingbirds are the only birds that can fly backwards.
If you’re wondering if there are any birds that fly backwards, the answer is yes! However, there is only species of bird that is able to fly backwards – and that is hummingbirds!
Only hummingbirds can fly backwards for a significant amount of time. In fact, hummingbirds also have the ability to fly upside down. This is all down to how their wings are structured. They have a ball and socket joint (known as a rotator cuff) that allows for a greater span of movement, freeing their wings up to move in all directions. As well as allowing them to move their wings in a figure of 8 movement that means they can hover in one spot; this is what lets them fly backwards.
The unique way their wings are formed is unlike the muscles and build of most birds’ wings, which can only move in a way that propels them forwards.
(s)gardenbirds