I think buying anything at a poultry auction is very risky. That seems to be where many diseases are picked up. I never buy started birds. Sexlinks are called that because males and females are different right out of the egg, so that should be near 100% accurate. BRs are easy for the most part.
What is a "columbia"? Columbian is a color pattern, not a breed, so wonder what they're crossing RIRs with, maybe Columbian Plymouth Rock? Oh, never mind, I see the Rock in the next breed cross you mentioned.
Sexing is an art, not a science. I can sex Barred Rocks with about 95% accuracy most of the time since the males and females have slightly different traits, but even then, one may be confusing. I had a Lt. Brahma cockerel once who was an Ideal Poultry sexing mistake.
What is a "columbia"? Columbian is a color pattern, not a breed, so wonder what they're crossing RIRs with, maybe Columbian Plymouth Rock? Oh, never mind, I see the Rock in the next breed cross you mentioned.
Sexing is an art, not a science. I can sex Barred Rocks with about 95% accuracy most of the time since the males and females have slightly different traits, but even then, one may be confusing. I had a Lt. Brahma cockerel once who was an Ideal Poultry sexing mistake.
