You did a pretty good job on this bird in what looks like pretty harsh light. I see some nice feather details. I like the pose and your choice of crop. Really like that one big water drop on the grebe's back.
Congrats on your forst image of this delightful little waterfowl. I like the attentive pose, and the water looks good. Glad you kept the bubble in there. The image does need a tiny bit of CCW rotation, and I'd add back some canvas below if you have it as the reflected head is rather close to the edge. Harsh light, exposed best you could.
A nice sharp image and rather like his head turn on this one, liking the water color too, I think Daniels suggestion regarding more canvas below is good
Nice shot of the Grebe,Somak.The bird is Sharp and the BG gels well with the Bird. If it was mine I would have removed some canvas from the Top and added the same amount at the bottom,but its great as is too.