Hi everyone! Today I have introduced my new 8 chickens (11 wks old) to my 4 1 yr old hens. We first let the young ones out in the yard to free range from their temporary run, then we let the big girls out too. 3 of my older hens have gave a couple pecks to the little ones but for the most part the two groups are completely ignoring each other. One is one one side of my yard and the others are at the opposite end. is this normal?