Thanks for the detailed information!!! They sound like fun birds to have around. I think next spring I'll want to get some chicks to add to my flock. I got all older birds this year because I was scared I'd kill chicks but I think I'll try chicks maybe with the Welsummers. Then I'll have a better idea actually how old they are! Where did you get yours from?
I got mine from Bwalden here on BYC, here is his hatching egg add: http://new.backyardchickens.com/t/746229/welsummer-hatching-eggs-12-npip-certified
I also got BCM eggs from him, the egg color is SOSOSO dark, very beautiful eggs and friendly personable hens.