Duck sleeping space question

[muddipuppy]

If my ducks free range all day, how much room do they need per duck in their coop at night? I'm planning on hatching probably 10 indian runner eggs and then keeping 2 for myself. if i keep only drakes do they need a nesting box?

 

[BarnSweet]

It's supposed to be 4 sq ft per duck but if they are only confined at night I'd think two or three would be fine.

But, if you only keep two males I'm pretty sure they'll fight, so be ready for a little feather pulling.

Males don't use nest boxes, but I've heard lots of female ducks won't use the nest boxes, either. Lay wherever they please, not where you provide.