Went to an arboretum...
this a really wonderful series of cute ducklings. Compliments to you.
My fav is #6 with absolutely nothing to criticize:
Emotion, tech, sharpness, composition, golden rule... 100%
Followed by #1:
I really like the interaction with the mother duck.
I am a little bit distracted by #4.
The gosling and mother goose are very well. Especially the expression of the gosling.
But somehow it looks a little bit over sharpened, unnatural. If you didn't do anything there in post, then it is just me, not knowing, what a big white can do. If you did some sharpening, then my personal taste would say, it was a little too much.
But still a great series of pictures and all my compliments to you.
And thanks for sharing.