One of the things I've learned from following Birds As Art's bulletins from Art Morris is:


Shots are best when the sun and the wind are at your back.


Birds usually take off and land into the wind. Having the sun come from the same angle as the wind means your subjects are better lit.


If the sun and wind are opposite, you're asking for challenges. That said, I haven't looked at your shots to see if I could tell the wind direction.