I like the scale of the glass birds. I do find the sky as a background to distract from the overall color of the birds. If something a bit darker was used it would have also taken the reflections and bubbles from inside of the glass.
I like the concept and the blue of the birds. The angle seems fine but maybe a more level head on shot would have worked better.
The border is fine but I do not think you really needed a border.
Hmmm...Interesting. The blues play well together. Interesting crop. They appear huge from the composition. Looks like street reflections so they must be. Honestly, for this challenge I can't score you as highly as I do a clear sharp in focus shot of a live bird. I vote on a curve and I don't think it would be fair to someone who captured a much more difficult shot. A will give you kudos for uniqueness though. Good luck in the challenge!
you could have cleaned up the spots in the glass under advanced editing. Not sure how well this alternative take will do! I'm afraid that I am not convinced, though I like the idea.
Good clarity on this shot. I wonder if a background in a different color might help these birds stand out better, or make the shot pop more. Lovely blue on the figurines.