Here is my question about 2 weeks ago my sisters dog got in my chicken coop and killed 5 of my 8 Rhode Island red hens. I waited about a week and decided I was going to replace them so I got 12 more RIR chicks. They have been living in my garage in a horse trough for the last week. Today I went to an estate sale and there we two Wyodotte chickens roaming free. Everything was for sale so I asked about the hens they told me you catch them you can have them for free. So my sister and I were able to wrangle one and I brought it home. My 3 existing hens instantly walk over to check her out no more than a minute later it was a free for all I caught the hen and put her in my pygmy goat pen that is right next to the coop. She roamed around for a few minutes and then her and one of the other hens started fighting through the fence. Decided it wasn't going to work boxed her back up and took her back. I knew if they were together the hens would have killed her. Now I am worried how they are going to react when I introduce the new lil hens to the coop. What should I do?