You can try what you want: I am confused by your count, 3 hens + 2 chicks = 5? If you add 4 chicks, which would equal 7, it will probably work for a while. This is called "chicken math" on here, and it has bitten most of us.
With chicken math, this is what happens. You get a set up going with a couple of birds. You love this hobby, this is fun, and really not much work. It is fun getting eggs, but really, we could, we should have, it would be even more fun to have some more chickens... but the space is already set up, already built and the space does not change.
Then you get some more chicks, little fluffy bits of fun. They are darling, and it is so much fun. Really, people don't need hardly any room for chickens, and oh, those are such neat chickens...maybe a few more. Trust me, we nearly all have been down this road.
Then the hens HATE the chicks, and incredibly vicious to them, some will kills them, ALL will attack them. So you separate, and wait till they are bigger, and pretty soon you can't stand them in the house... and you put them together.
Now the coop is the same size, but the chicks are growing. As they grow they are much bigger than a chick, and the coop is becoming more and more crowded. There is no where for birds to get away from each other, no place for birds to hide from each other, and very ugly behavior often starts. Feather picking, wounds, bloody combs, are some of them.
All those birds are a lot of work, the coop is never clean, the dust is insane, and really this is not as much fun as it was. That is chicken math. There are only three solutions for chicken math. Larger coop, more coops, or culling some birds.
People who keep them as pets, are horrified at the idea of culling birds, and often cannot change the coop arrangement, and will just 'wish they would all get along" but they won't. They are confined by people, and in my opinion, people need to manage that confinement by either having a large enough coop, or reduce the number of birds.
If you can't imagine harvesting or culling a bird, then I would strongly recommend that you limit your flock, growing it very slowly. Add two chicks this year, chickens are not real long lived most generally, and while it is sad to loose a bird, then you can get something new!
Mrs K
