They are very lovely shots; well-exposed and good composition. You may also want to trytaking a few close up shots of birds so they are the main subject rather than just a tiny part of a scene.
I'd really like the background to be sharper but perhaps that's too much to expect. There was some heat haze around anyway.
Generally for shots like these, foreground objects have more detail than distant ones. If you get an adapter and use a haze filter it can help. Also, if you edit, you can sharpen the image a tad and adjust brightness a contrast. But don't over do it.
