Muscovys take longer too . If yuor temp was a little low that would make the incubation period a little longer . If they are wiggling they should be pipping soon . Are they making any noise ?
Cayuga's. So, I know it takes 28 days. They've internally pipped which is good. My temp and humidity were spot on as far as I can tell. There's no noise except for the occasional *thud* of an egg hitting the side of the incubator.