"Second" First attempt...
I just saw a bird similar to this one in the grassfield in front of my workplace! It is huge and eats rats.
Bigger than it looks in the icon!
(worked on the BG)
Thanks for the FB. I re-worked the BG and removed the AA on the bird to reduce colors.
I hope it is better now.
Your three lighter greens are indistinguishable. They're hard to tell apart even zoomed in.
I think adding new colours like that just for AA is a waste. Hue barely matters for AA, so why not use colours of appropriate values that you already have in other parts of the image?
Grass: too flat looking
Sky: well It's a sky.
Not bad, but I think the bird deserved a better BG.