I've been reading the various threads re ducks sitting on eggs for long periods but my two haven't laid for several weeks. They seem happy to sit in their coop permanently unless I lift them out. They are quite "grumpy" about this and will peck at me and the hens but then have a swim in the pond, gobble some food and then are anxious to go back to the nest. How long is this likely to continue as I'd prefer them to free range in the garden and do what they usually do.