You've got a great pose and good sharpness. The only thing I can nitpick would be to play around with the crop a little. Maybe take a little bit off the top?
The fighting egret poses look great, and the BG is very nice and appealingly shows off the habitat. Some of the brighter whites could be toned down IMO. I like the amount of canvas above, but the two oof birds in the FG are distracting therefore I would crop some off the bottom and left (maybe cutting the lower heron's neck in half, then cloning the rest of those two birds away, if within your ethics.) A neat scene for sure!!