Adding a New Hen to the Flock

[vonniefisher]

I have 2 hens that are about 9-10 weeks old. I started out with 4 but 2 ended up being roosters and I had to rehome them. I'd like to add a buff orpington or another rhode island red and have 3 hens. I'm just not sure exactly when to add a new bird. Should I wait until my 2 are older? Will adding a 3rd bird create problems? Will they get along? I appreciate any information - I am new to having chickens.

 

[ChickenCanoe]

You'll want to quarantine any new birds but the sooner you add the new bird the better. The older they get, the more established the flock becomes. I'd add 2 birds and quarantine for 2 weeks. That means a good distance from your first flock.
http://www.depi.vic.gov.au/agricult...ry/quarantine-advice-for-small-poultry-flocks
Combining like numbers and like sizes helps integration. Lone birds are sometimes picked on.