question about breeding

[Easter eggers]

So a couple weeks ago i got some millie fluers (not show quality). I am intrested in breeding them but i got them all from the same feed store so could they be brothers and sisters or dose it matter?

 

[NYREDS]

They undoubtedly came from a hatchery & were bred from a large flock making it unlikely they are siblings. That said, it really doesn't matter anyway.
However, if you like Millies [I assume you're talking aout d'Uccles] & are interested in breeding them why not start with better quality birds? It costs the same to raise poor birds as it does to raise good ones.