The kind of shot I love to look at. I will say though the top 1/3 of your image is at odds - tonal range-wise - with the rest of the shot, or so it appears to me. Have you tried a crop where you just take out the top 1/3, basically placing the birds along the uppermost horizontal thirds line of the image? It would make it even more starkly elemental and increase the negative space. Plus put the subject in a place people aren't quite expecting, which to me isn't a bad thing. :)
Uber cool shot. It's so hi-key the wave at the top of the shot looks like clouds, and the wave by the birds looks like a horizon. It looks like you got a shot of some prehistoric monster birds laying waste to the landscape. Nice job.
BTW, this is a different interpretation of the challenge in my opinion. It works for me for the challenge...I think there can be peace in the harmony of nature's energy. This is my favorite of the bunch.