I know where my red sex links come from because they are created at a local farm by me so I will continue to keep those in my flock as long as I have my black jersey giant roosters.I would think so some genes might not play as well with eachother but i couldnt say which
I plan on adding different breeds in the spring to mix them with just to see what happens.
Kudos for hatching that black polish baby! those eggs are the most finicky of my flock I could hatch 1 out of 30 or 25 out of 30 I swear

