Marc,
I have my work there.
Hint:
This is primarily for ornithologist not photographers. So they are very interested in getting pictures of birds in all their variations. For instance there are Red-tailed Hawks and there are Red-tailed Hawks dark phase and then Red-tailed, dark phase, SE USA hawks etc etc. They have tons of shots of Red-Tailed hawks but do they have the light phase - Mississippi delta variety? That sort of thing.
Or they might want a first spring shot of a male Kirkland's Warbler in breeding plumage etc. I think you get the idea.
If you do submit be very precise about time, place and habitat.
Finally this is for science not art so they may not find some shots that you like not all that useful for their purposes. A simple 90 degree flank shot works for them most of the time. Be as accurate as you can about WB and over-all color accuracy for obvious reasons.