Do mallards need separate floating pond nest?

[Mpracey]

I'm planning on getting floating Mallard nest for the pond. Last spring the ducks layed eggs in my flower beds. So, this year hopefully the pond nest will be used. But, do I need one nest per hen?

 

[Kevin565]

I believe you would need one per hen but I am not familiar with these nests

 

[Mpracey]

Thanks that's what I thought - one nest per hen.=)