Oh no no I can't breed Derp. She has a lot of problems, and I don't know if they are genetic or not... it would be very irresponsible for me to pass those on to other poor chicks! Remember, that Derp had a failure to thrive and nearly died many times. I don't know if her momma had problems, or deficiencies, or if there are bad genetics happening here.
I mentioned it on the other thread, but Derperella came from Meyer hatchery. It appears that their new 'standard' for Salmon Faverolles is Derp-colored! Which is wrong, of course, for Salmon Faverolles, but you know how it goes at a hatchery sometimes.
Coho also came from Meyer, same hatch date, but she is much closer to what a SF should look like.