Two of my girls have been laying at the same spot inside the main coop the past 8 days and there are 16 eggs today. There are four questions I need your help with:
1. How many eggs should be enough for one duck to sit on?
Depends completely on the duck. Some go broody as soon as they have only a few eggs, some refuse to sit until the have a mountain (like 23 eggs). A good EXPERIENCED duck can easily hatch out 15 ducklings, and some can actually hatch out 20. Younger less experienced mothers can hatch zero or just a few, it is a learning thing, as well as a personality thing. (some are simply better mothers than others)
2. Should I wait for the laying girls to go broody before i move the eggs to a new location or it can be done now?
It depends on how you want this to work.
Muscovy are pretty smart when it domes to their eggs. They want to brood where it is safe and secure for the ducklings. If you mess with them a great deal, they might decide that the spot is unsafe.
I have always found that putting the eggs where I want them to brood works, but I usually do that when there are only 4 eggs not when they already have such a large pile.
If it is a totally different location, you might have to show the duck or ducks where the eggs are now. When they see that the nest that they were using was robbed, they can get very unhappy and try to find a better hiding spot to lay eggs, or even completely stop laying. That is why it is important that they know that you moved the eggs, but that they still have eggs.
3. Should I split the eggs between them when they have laid enough? (based on the recommended number for question 1)
You could set up two nests right next to each other, if your ducks like each other and get along well. Then the ducks will choose which nest they want to brood on, and brood when they feel like it. However, it is a VERY individual kind of thing. I have a small flock of muscovy... I think several started laying at once, but after the nest got close to 20 eggs in size, only one duck went broody. Only now, almost 3 weeks after the first has gone broody, does a second one look like she is starting to think about going broody.
4. Can the other non laying girls sit and hatch the eggs that are not theirs?
My non-laying/young ducks have never wanted to go broody... but I had one try to mother the ducklings when their actual mother disappeared for 6 hours... she couldn't figure out what to do though. When she was older and hatched out her own eggs, she was a fine mother.
Thank you, any advice on these is mostly welcomed.