Introducing a duck

[Crazy_Beautiful]

I currently have 3 cayuga ducks.
Can I add just 1 more duck without quarantining? Or do they have to come minimum 2.
All of my segregation areas are taken up by chicks at the moment.
They have yard access during the day and at night they sleep in a 8'x7' predator proof run.

 

[Miss Lydia]

Where are you going to be getting the new one? Really up to you if you know where the duck is coming from and know they take real good care of their birds it may not be a problem. But if it isn't anyone you know just some random person selling ducks then quarantining is best . Then do the look don't touch meetings so the newbie doesn't get overwhelmed with the residents wanting to run it off since in their minds it isn't part of the flock.