It really just depends on how you treat the birds as they grow. Every bird is different even no matter what the breed's reputation. If you chase your hens around all day you can be pretty sure that they will not want to come near you. Try picking them up one a day for a few minutes, and every time you reach your hand into where you keep the chicks you should have some snack or something that way they know right off where the food comes from and who's responsible for it. This will make them all the more eager to run to you when ever they see you.