Do we know if the eggs are hatching? How long has she not been getting off the nest? If it's been a month since she started sitting then we are right at hatching time, and often when the ducklings are hatching she won't get off the nest. Lifting her off while the hatch is in progress could cause a drop in humidity and lead to shrink wrapped ducklings, so I'd be careful and make sure the hatch isn't in progress before moving her.
Edited by Pyxis - 4/24/16 at 2:04pm