I have four RIR hens that are about eight months old. I think (HOPE) all of them are laying. I got them from someone who hatched them with their kids, so I don't know about how good/strong the breed is in terms of genetics. I am only questioning their breed because I get bluish/greenish eggs. (I also get brown eggs, as well.) If you want pictures, you can find them at this thread: https://www.backyardchickens.com/forum/viewtopic.php?id=127934 (The pictures aren't great, just so you know.) What chickens could I have that look like RIRs or NHRs, but lay blue/green eggs???