I wish I could help you on the duck questions but I can't figure mine out! She's a cayuga mix. She's laid about 30 eggs now! She had about 15 at one time plus some hen eggs and started laying somewhere else. I combined the collections and she did 2 things - 1) kicked out 7 eggs and 2) started laying in the original location. UGH! So, thinking she was rejecting the 7, I ditched them into the pasture. I never saw any indication since about the 3rd egg laid that she was going to sit on the eggs at all. So again, she got a collection of 12 eggs + 8 hen eggs. I've since taken them all in and put them in the incubator. She is still laying eggs! I can't turn her off! The hen seems to be taking a break, but that's ok. She's pretty bedraggled and a mess. She's missing feathers all over her. I'm suspecting from the rooster, possibly the drake. When the duck started laying, the drake started getting pretty possessive of his girl. I feel bad for the hen - she seems so laid back and never bothers anyone!!!