How much do I have to worry about in-breeding when it comes to chickens. I have two roosters, a Barred Plymouth Rock (BPR) and a RIR. I have four BPR hens that are probably sisters to the BPR rooster since they came from the same store, and thus hatchery(?). I have two RIR hens that are possibly sisters of my RIR rooster. Since we live on an island and only 1 local store gets all the chicks we buy from two regional hatcheries, you see my concern. We had two hens go broody and I have kept 5 of the hens from that, so 5 hens that are definitily offspring of my two roosters. I have them segregated, but my wife thinks i should integrate the 5 hens into the main flock, but I am concerned about further inbreeding if my two broodies raise future clutches from some of these chickens that are daughters of my roosters. Am i justified. Is inbreeding a problem?