How old is she? I had a young female that was "sitting" shortly after she started laying. She was just confused, naturally instincts kick in and they know they are made to have eggs and sit on them. And at such a young age they try. I would take the eggs out of the nest including the decoy. (If they are laying and laying where you desire there is no need for the decoy now.) Let her come out and enjoy being a young duck. If you WANT her sitting to hatch I would give it maybe a few weeks and then leave the eggs that she lays in there and see if she understands then. You can even hold the eggs aside and give them back after you have about 8 or so and give her clutch a good jump start.It won't discourage her from sitting in the future. I was on here asking the same questions last year. But my female is now sitting on 13 fertile duck eggs that are due to hatch (approx) 3-17-12 and doing a great job! When she started she would (what I call) "semi-sit". I assume she was doing it to keep the eggs from freezing and cracking since our weather was so cold.She would go in and sit periodically but wasn't committed to it FULL TIME. But once she had the size clutch she was happy with she sat all the time. She comes out once in the morning for food and water. I don't see her off the eggs again all day. But I don't watch 24-7 either.
GOOD LUCK! Keep us posted!
GOOD LUCK! Keep us posted!
