The traditional Southern way among whites, Indians & mixed bloods (mestizos) for sexing chicks, duckling, goslings is to firmly place the nand over the back & flip the pver loosening the grip some.
A COCKREL (I DO NOT RAISE ROOSTERS OR rather they all are roosters- hey they all ROOST) will struggle rarely more than once.
a PULLET will try very hard to right herself.
This is an easily verifiable & general condition in many animals. It its the same as when 2 male dogs comabt. the weaker one will go to his back & bare himself as defeated. It is exactly the same with poultry.
I watched my grandfather & his game COCK junta sex all the chicks as the hatched. I know several tribes in Oklahoma do the same. I have watched it done in hatcheries , those most use the wing feather technic now as 99% accurate. I have been doing it for over 60 years myself. Most breeds will show a 90% accuracy. My wife sexed herself(now that sounds odd) a box of goslings at a hatchery. all females. the employee checking her order told her it could not be done, so he used his scope thingee & admitted she was 100% correct.
Simply put a very young cockrel acknowledges defeat, a pullet has no reason to do so.
