How to Introduce New Chickens
Never put new birds straight in with the flock. Chickens recognise each other by face and establish a pecking order by force — and a stranger is treated as an intruder.
The rule: see but do not touch
New birds go in a separate but visible enclosure inside or beside the run for 1–2 weeks. They can see, hear and smell each other without contact.
This does two things: it lets the flock habituate to the newcomers, and it lets you watch for disease before mixing.
The timeline
| Stage | Duration | What happens |
|---|---|---|
| Quarantine | 2–4 weeks | Completely separate, no shared air space. Watch for illness. |
| See but do not touch | 1–2 weeks | Adjacent enclosure, shared fence line |
| Supervised mixing | 3–7 days | Together by day, separated at night |
| Full integration | — | They roost together |
Total: 4–6 weeks if you do it properly. Rushing it causes injuries.
Do it in the evening
When you finally mix them, do it at dusk, on the roost. Chickens are docile in the dark and wake up together, which blurs the "new arrival" signal.
Do not introduce them in the morning — you are giving them a whole day to fight.
Space and distraction
- Add extra feeders and drinkers — at least two of each, spread apart. Competition at a single feeder is where bullying starts.
- Add clutter — pallets, branches, a couple of overturned crates. Submissive birds need somewhere to break line of sight.
- Free range if you can — more space means less conflict.
- Scatter treats across a wide area so they forage together rather than compete.
How much pecking is normal
Some pecking and chasing is normal and settles within a week. It is not normal if you see:
- Blood drawn
- A bird pinned down and repeatedly pecked
- A bird hiding and not eating
- Feathers pulled out in patches
Separate immediately if any of those happen, and go back a stage.
How many to add
- Add at least two — a single newcomer has no ally and gets the worst of it
- Do not add one to two — the existing pair will bond against it
- Adding three or four to an existing four works better than adding one
Common questions
How long does it take to introduce new chickens?
Four to six weeks done properly: 2-4 weeks quarantine, 1-2 weeks see-but-not-touch, then supervised mixing.
Can you put new chickens straight in with the flock?
No. They will be attacked, and you risk bringing disease in. Quarantine and a gradual introduction are both necessary.
Why are my chickens attacking the new one?
Chickens treat strangers as intruders and establish hierarchy by force. Give them a see-but-not-touch period and add clutter so the new bird can escape.
Should I introduce new chickens at night?
Yes for the final mixing. Chickens are docile in the dark and wake together, which reduces the "new arrival" signal.
More chicken keeping guides: Backyard Chickens for Beginners · Why Chickens Stop Laying.