Lovely rich color and very nice stopped motion - I in fact like that they are not syncrhonized - lets you see more of the birds' structure with different "poses" captured.
I love images of water, and this doesn't disappoint. It almost appears as if this is three shots of the same bird, great effect and even cooler that it isn't. Lovely colors and great capture!
You must have lost points for the gannets' failure to synchronise. I can see no reason for this to be under 6. Lovely shot and it looks like a decent day out too :-)
You got the motion stopped and picked a decent subject but the color looks way off to me. I got a comment once about black borders fencing in moving subjects. I took it as good advice and I think it applies here or at least not such a bold border. Anyway, keep clicking and good luck.
The subjects are lost against the background and it is difficult to make them out. The first two birds appear headless. The blue water at the top also looks over processed and unnatural. A different angle, possibly with the birds against the water only or the sky would've made them stand out more.