I really like
#1.
It might be fine" as is" so I would like to leave it alone as a good base.
I also like having #3 for different applications. I kind of consider them the same logo, just different pieces.
I wouldn't mind trying a few slight modifications to
#1 just to see some differences.
I am thinking slight variations in the color of the duck, maybe a light tan on the body like #4's body.
I like the profile of the duck but you could tweak the head to make it a little more realistic, change the beak color for example.