Introducing new chickens

[Katejc]

I have a silkie cockerel, silkie pullet and a mixed pullet (possible American game mix?) all 18 weeks old. I just picked up two 9 week old Wyandotte bantam pullets and on Monday I am picking up 2 golden sebright pullets around 14 weeks old. What is my best bet for integrating everyone? I am going to keep the new ones in kennels inside for now, introduce all the newbies to each other first and then introduce my 3 (power in numbers?). Is this a mistake? Advice and tips please!

 

[ChickNanny13]

How old is your original flock? All new additions should be quarantined from your flock and each other, for at least a month for observation and prevention.
When you're comfortable that all's well, depending on how much space is in your coop and weather (you should update your profile with location) put each new group in their own wire cage/crate with food/water & in the coop OR block of sections of your coop with wire for each new group with food/water ... See but no touch method of intro.
Another method mentioned is have enough hiding places for the newbies, extra feeding stations and try adding at night, they'll wake up and figure it out.

EDITED: A picture of your set up would help, with the the dimensions

 

[Katejc]

The original 3 are 18 weeks. I should mention these aren’t from a hatchery. We are still building our coop so they are in a 4x10 sunroom for the time being. These 2 are already better flyers then our silkies!