Hi Victor,
As others have said, a very good start, welcome to the "CiC birders club"
Looking at the black crowned night heron shots; do watch your exposure, they are nearly all blown in some area or other and this will lose you detail. If you are not using blinkies and the RGB (not luminance) histogram to review, you may not see this (until it's too late). However, it is also possible something is 'going wrong' in PP causing it.
The only black crowned night heron's I have ever shot were in an aviary in a zoo - I don't think they are native here in UK.
Good compositions and focus (on
all of them).
Cheers,