Greetings from the Critique Club!
Nice shot of mallard hen, and she has plenty of room to swim into. Ambient light is good and not harsh, ripples in the water and funky colours/patterns add interest. But though technically a good shot, it's just a little on the bland side. This pic could have been taken anywhere, so I feel that is why it didn't connect with viewers.
One thing you may want to try in the future with wildlife: shoot at their eye level, not yours. Here you were clearly standing and shooting down at the duck. Had you shot at her eye level, you may well have got a fantastic and different perspective and seen new things. Never be afraid to change your point of view (aka pov). Often it pays off.
Hope this helps, keep shooting and entering!
Susan |