I feel like it varies with each individual duck. One time my two ducks collected quite the pile and both tried incubating it at the same time. I just let them since the eggs were infertile, thinking they would give up eventually. But after 5 weeks they did not give up! So I took the eggs one day and they didn't seem to care.I feel like this is the best choice, I would love for her to hatch a couple but shes collected far more than we could manage. Will she be upset for long? X
But my other duck gets upset. She looks for the eggs and makes this particular, "where's my egg?" peepy noise. Usually only for an hour or so. But then sometimes over the next few days she'll go back to that same spot and look for it again and make the peepy noise. Then she'll remember she needs to go swimming and off she'll go!
more fun to go play in the sun with the other single girls.