Problem Ducks in the Donkey trough.
It was disgusting, mud feathers!
This was my solution with wire fencing and it worked!
The taller fencing is behind. The lower in front rolled back and just a few inches higher than the trough edge.
The donkeys have the larger range of motion to drink.
The...
One of my female ducks will do this when she sees me coming and wants food.
She also dies it when she wants to go in her shed at night.
I think she's just being sociable :-)