A number of years ago I had 21 blue bar old birds in race team . Fir whatever reason I’ve more or less got chequers darks blues and light ones , very few blues , an odd grizzle and , I’ve lost dark cheqs light cheqs blues, pieds doesn’t seem to matter what colour they are , my problem is if a bird catches the eye like burning up the sky coming into form keen on nest whatever that’s when I can say bye bye . Maybe the hawks can see what I’m seeing a bird that stands out . Regardless of colours .