I went to the feed store for organic lay feed today and came home with a new chicken instead. I have some questions about her and about eventually blending her with my current flock. I have two girls (EE and RIR) who were raised together along with another RIR who passed away in January. The girls in the original flock are now almost 4.5 years old. They were raised by hand and are very friendly, snuggly girls. I didn't intend on coming home with a new chicken. When they were out of my usual feed, I bought just enough lay crackles to hold me over until my usual feed comes in later in the week. I got to talking with the guy about my flock and mentioned the girl we lost in January. He asked if I wanted another chicken and that they happened to have a real sweet girl in the back. I paid for my stuff and went to visit, just because I love chickens. Anyway, she was a really sweet RIR probably younger than a year old. Within minutes she was eating out of my hand. We decided to bring her home, where we have a playhouse/coop where she could live while we keep an eye on her health. While setting things up, she laid an egg in the transport box! She let me hold her and pet her for a bit and appeared to settle in really well. As dusk was setting in, she got nervous, started pacing, and didn't appear to want to go into the coop. When I reached in to direct her toward the door, she bit me! She then roosted on the top of the open door rather than going inside (she had been in and out all afternoon). When I reached for her, she bit me again. I eventually got her inside, but now I'm worried. Did I just adopt an aggressive bird or did she bite because she was spooked? How long does it take to determine whether she's going to fit in with my other girls? I don't want to keep her in quarantine for a whole month only to find she's a poor fit with my current flock. How long does it take for an adoptee to adjust?