From observation it would appear that our released rescue ducks are moving down into the valley at night and returning back up the hill to the house in the mornings.
A few times in a row I have now been observing them in the paddock in the morning, making their way up the hill back to the house.
Down at the pond or on their way up they must have met our resident paradise ducks.
This morning they were all teaming up in the paddock and making their way up together.