How soon can we introduce new chicks to our lone 9-10 week old pullet?

[jktowey]

Okay, thank you! This is our current set up - we have 2- 22 day old chicks in the kennel. Our PeekABoo is freely roaming the sun room as usual. When we first moved the chicks into the kennel, PeekABoo didn't sound too happy, but the last half hour or so seems curious about the little new comers.