So Red and Black Sex Links or are there others?The only 100 % effective method is to buy sex linked pullets. In these breeds there are significant color differences between male and female chicks. All other methods have at least a 10 % margin of error.
Edited to add :
Once again depends on the breed. It wouldn't work for my heritage breed. In my case when the comb expresses at 8-10 weeks I know.
I would look on youtube, there are planty of "no-crow" collar videos there.
There are other auto sexing breeds but those 2 are most common. Depending on what you're purpose is. For laying the sex linked hybrids are great.
HRM...I'll have to research if this is common in forums for users of the "no crow" collar who can provide "first person experience" that this has happened to them. If someone made one out of blue jeans at home from an online pattern that will be regarded as a trash observation. My understanding is that it is safe and effective for noise reduction. I would look at the verified amazon reviews the people there saying their bird died seem to be unverified, also under the questions section there was a sizing chart. Just make an informed decision regarding your personal flock if the potential for such a product is something you want to use I do recommend being certain and getting sexed, sex linked chicks(you can order these vaccinated), or another alternative that I find less desireable check craigslist in your area for mature chickens as those can be eyeballed or the breeder can let you know what you getting.
