I think there is 1 frame too much of his wings rising, it should be an inbetween instead. I tried to make this edit myself to see if it worked but wings are hard, so please forgive me.
Other than that I think that by changing the frame rate of some frames could make the wing claps a lot more heavier. Probably doesn't fit such a small bird, but if it was a bigger bird it would definitely improve it.
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