Ach, these are a pretty good standard and I like your shots and I think you can take some nice shots and are learning fast. So I'm going to give you some pretty harsh critique. This is not to do you down, but because I think you are capeable of some excellent shots. I do hope you take if as constuctive.
1. Tail cropped, either include it or scrap it.
2. Looks like you've pushed in post. Tones are a bit grey on the heron and I'd expect more backlighting (specular highights on the edge of the feathers to be spesific)
3. Blown highlights around the beak or/and same tone as background but it merges anc the overall effect is that that area looks blurred or lacking in sharpness
4 Is accaptable though a bit lacking jn tone