Hello there and welcome to BYC!
X4 You need to introduce new birds slowly over a several weeks time from a cage or fenced off area but within the flock at all times. You can't just throw them into together immediately. This will cause chaos. Let them see but not touch for several weeks. When mixing day comes, it should go more smoothly. Always watch closely for that day and the rest of the week. And always intervene if it turns bloody.
Good luck with your flock and welcome to ours!

X4 You need to introduce new birds slowly over a several weeks time from a cage or fenced off area but within the flock at all times. You can't just throw them into together immediately. This will cause chaos. Let them see but not touch for several weeks. When mixing day comes, it should go more smoothly. Always watch closely for that day and the rest of the week. And always intervene if it turns bloody.
Good luck with your flock and welcome to ours!