drawing of the bird is nice and consistant volumetrically-- looking good there. I'd focus on the speed/ up and down motion of a wingflap-- watch some birds/ video of them doing the motion you're thinking of in your head. You can really feel your arc of movement from right to left, but its hurting not having any up and down with the bird's wings flapping-- feels a bit "Point A" to "Point B" straight inbetweening. Keep at it! Can't wait to see it finished.