Mamma hen hurting her own babies

[CHICKEN & RABBIT LOVER]

We have had chickens for 3 years now. We have 15 Hens and 1 Rooster.
One day one of our Chickens went missing, a month later on July 11th she came back with 11 chicks, so we separated her and the babies in an enclosed area for protection.
When the babies no longer needed her we separated them because the mom was getting too aggressive with us.
Now that the chicks are almost 3 months we put them in a rabbit cage for a week in their coop to let them get to know each other so the chickens won't hurt them as badly.
Now that it has been in there for a week we let them out with the other chickens. We put the chicks in at night and it was fine, but then in the morning, we noticed one particular chicken was viciously attacking them.
At first, we didn't know what chicken it was, then we realized it was the mom! We were very surprised because she was such a good mom when they were together we also read online and it said: "When you introduce the chicks to the flock the mom will protect them".
We have introduced chicks in before but this has never happened to us before. This is also our first time having a chicken come home with chicks (Mamma Hen).
What should we do? PLEASE HELP

 

[50-45-1]

Separting them from their mom was probably a mistake as she would have intregated them to the flock already.
Make sure there are pleanty of places for them to escape the bullying. Put up some limbs in the run for them to fly up on.
Only interfear with the sorting out of the new pecking order if somebody is realy getting injured.
Good luck!

 

[CHICKEN & RABBIT LOVER]

We were going to keep them together but she was getting really aggressive towards us.
We could'nt even change their water without her attacking pecking and jumping towards us.
So our friends told us that the chicks did not need her anymore so we should just send her back to the flock.

 

[CHICKEN & RABBIT LOVER]

Thank you so much for your help.

 

[50-45-1]

Yes, put her back with the flock.... (along with her babies)!
I never separate mom and chicks. Its stressfull for both sides.
They will have a tough time now becoming part of the groop.
It always difficult adding new birds to an existing flock, especially when they are different ages. The younger birds get bullied by everyone. If they are with there mother hen she will do all the work of easing her brood in gradually.

 

[50-45-1]

I just reaLized you are a new member! Welcome!
Your young birds will eventually find there nitch and blend in with your other birds. Some will likely be roosters though so prepare yourself for that, and what you may have to do with extras. I hope you have a coop and run with plenty of room as space is important in so many ways.
Welcome to the backyard!

 

[CHICKEN & RABBIT LOVER]

Thank you very much. Yes we have 5 roosters and 6 hens the roosters ate separate from the rest because we are afriad our rooster will hurt them.
Thanks again for all this help you have been very helpful.