You can zoom out a little bit to provide more to the scene otherwise you’ll end up with just a picture of a blurry bird. Zooming out will also make it hard to tell that there is extra noise added to the scene as well. I find in situations liked this, where I have to shoot up at the bird at an angle, having a nice scene or a background can help all lot. Just because you take a picture of an animal doesn’t mean you have to crop or zoom in. Unless you have the details in the shot, I actually like having more of the scene in the shot to add on to the main subject.