Welcome to BYC. Where, in general, are you located? Climate matters.
First, prepare for quarantine.
https://www.backyardchickens.com/ar...nderestimated-part-of-raising-chickens.67097/
Now, before you get attached to them, evaluate the new flock (
https://www.backyardchickens.com/articles/what-to-look-out-for-when-adopting-new-poultry.76403/):
- Are there any unhealthy birds?
- Any parasites?
- Any bullies?
- Any special needs birds that will increase your workload and decrease your joy in the flock?
- How many eggs are you getting?
- What's the ratio of hens to roosters?
- If it's fall in your location, how is the molt going? Remember that the best birds may look the roughest during the molt.
- Is there any other reason to suspect that some of these birds are going to be trouble?
Then evaluate the facilities:
- How big is the coop?
- How big is the run?
- Are those numbers adequate for the birds' needs? https://www.backyardchickens.com/articles/how-much-room-do-chickens-need.66180/
- How much ventilation?
- How much roost space?
- How many nest boxes?
- How many feed/water stations?
- Any extras like built-in storage, built-in brooder, etc?
- What are the 3 best features of these facilities?
- What are the 3 worst features of these facilities?
- How hard is it to clean?
Then you can form a plan to work with your new birds -- how many to keep, how many to rehome, how many to cull, etc.
Here are some useful articles on integration:
https://www.backyardchickens.com/articles/introducing-new-chickens-using-the-“see-but-don’t-touch”-method.67839/
https://www.backyardchickens.com/articles/adding-to-your-flock.47756/
I have frequently read it recommended to, when dealing with introducing a small number of birds into a larger flock, after the initial quarantine and initial see-don't-touch, to put a few of the more docile members in with the newcomers for pre-integration so that they have friends in the new pecking order and don't get ganged up on so badly.