I do not agree with you with the birds are in focus. Look at the bird to the right. It looks like it is out of focus. But what the fuck! It is a photo, and this is perfectionism!
But I think you did a good job, by catching them while they was inside the "frame". Actually I like it more now than before.

They are silhouettes on the over exposed sky.
It's really hard to get them focused since they are so small, at the same time trying to get it timed right since they are flying.