This is a trait I have noticed in the Buckeyes at hatch and within a few days in my Leghorns. Throughout this discussion, please bear in mind the obvious: Baby Chick Getting Introduced Buying straight run means that you are purchasing a chicken without knowing its sex, male or female, rooster or hen. This makes sexing newly hatched chicks difficult. The behavioral changes, like the startle response, will also be more clear and consistent. A chick is covered with downy, soft, small feathers until it develops past 6 weeks of age. While baby chicks are covered in down, the ends of their wings will have a light feather fringe. Over the past years there have been many methods developed for how to tell the sex of baby chicks; some methods proved haphazard, some have proven quite effective. You are here: When we first start in poultry it is hard for us to see the differences in the boys and the girls. In mammals, it seems to have something to do with conditions favorable to male producing vs. Red Stars, for example, are a sex link breed. When it comes down to it, accuracy is often determined by the handlers skill level, familiarity with the breed, and the breed of the chicken itself. I have experimented with this method of how to tell the sex of baby chicks over the years and there have been scientific studies as well and the results reveal this method to be nearly useless. A female pullet chick will have wing feathers featuring two varied lengths. In crested chickens such as Polish, Sultans, and Crevecoeurs, the crest feathers of the females are curved and form a soft topknot.