Lots of things do eats hens - what do eats hens specifically..........mostly foxes, badgers, dogs, stoats and of course biggest eater of hens and chickens are people.
They eat pond plants like pondweed
Bass, water snakes, turtles, herons.
cows, chicken and horses. I found you can put carps in your pond.
A pond man.
snakes
bumchum
usually cats
foxes, wolves, and other non-domestic carnivores
bluegills
beaver and painted turtle
A turtle or snail.