The photograph has great detail particularly in the egret. That's interesting. The exposure freezes the bird in a way enjoyed by some, but not all, as it tends to render the dynamic as static, but that's an artists preference. If it was a document about egrets, one might want the sharpest and most frozen image possible. If the intent was a photograph about the milieu maybe some motion would be desired. The viewer right here doesn't know the intent.
The content is well arranged, but oddly the interest doesn't hold too long for me. Nothing but the bird? I just don't find anything else to grab. And then there is the vignette. I wouldn't apply it to a photograph like this, and certainly not this dense. First, it tells me to ignore the b/g. That may be part of the reason my interest flags quickly. The vignette also is a style statement, and unfortunately today, that style reads "syrupy and romantic". I think just looking through this vignette makes the photo better in every way.
This would be successful for me without the vignette.