Talk:MHD: The Darkness Within XIV - Epic Showdown in the White Fatalis' Tower!/@comment-130804-20130510140020/@comment-5448890-20140403211616

Because we did it all the time. Two different high-stock birds → breed their children to each other → breed those children to either a sister/brother of the first two, or a completely different line of equally high stock. Allows preservation of bird quality.