I tend to say "my birds" when I talk about the chicks I am hatching from birds I have bought even though I don't truely consider them my own line. I'm pretty quick to point out where I have aquired birds from just because I hate to dismiss all the hard work that was put into them before I aquired them. I do agree that once you breed it too something else it's not really the original breeders line since they didn't choose what to breed it too, though they aren't really mine either. I don't think I would really call them mine and mean it for several years.
Sara
Sara