New and Old Chicks

[Mel281]

I have 3-day old and 3-week old chicks. When can I introduce them to each other?

 

[Evelyn Walker]

The sooner you introduce them the easier it will be. Do it now.

 

[CluckNDoodle]

I second that, the sooner the better, but I do usually wait until the newly hatched chicks aren't wobbly and I watch closely to make sure there aren't any bullies.
Edit: I just re-read your question and realized you said 3-day-old not 1-day-old. They're likely just fine and no longer wobbly, just monitor them for a bit.

 

[aart]

What does your brooder look like?
How many of each age group?
I'd split brooder with mesh wall in case of trouble.
Have had it go well.... and disastrously.

 

[Mel281]

Thanks. Started well but I noticed the 5 bigger ones hogging all the heat and shooing the 3 little ones away. I’ll have to figure out something else. They’re back apart.