Roosters behaving badly

[Birdnerd04]

Hi!
We have a three-year-old rooster who has a very mild temperament. Recently, we introduced two new roosters to the flock. There is an issue of dominance and some aggressive behavior to the two younger roosters. Is there a way to introduce our two young roosters and the seven new female pullets to the flock without causing discord? Also, at what age should the pullets be introduced to the flock?
Thank you!

 

[Isaac 0]

Hi there, Welcome to BackYard Chickens! So glad you joined!

 

[DobieLover]

Hello and welcome to BYC! Glad you joined.
I strongly advise against trying to bring a sexually mature male into a flock with a resident rooster.
The pullets can start the look don't touch integration as soon as they have fully feathered.

 

[Pork Pie]

Hi and welcome to BYC. I agree with @DobieLover. Check out this link for fu details on integration - Flock integration

 

[rjohns39]

Hi and welcome to BYC We're so happy you've decided to join us

 

[Chick-N-Fun]

Welcome to our FUNomenal Flock!
We are delighted to have you here with us!

 

[drumstick diva]

Welcome to BYC. Please do follow Dobie Lover's advice.

 

[sourland]

Welcome to BYC. I agree 100 % with @DobieLover

 

[chrissynemetz]

Hello! It's nice to meet you! How large is your flock? And how old are the two younger roosters?