How can you tell a hen from a rooster when born?

Answer 1

Sexing chicks is a very difficult job to do well. Sexing or identifying the sex of a day old chick by looking at its sexual organs is done by very few very well trained people. It is called Vent sexing. It takes a long time to learn how to identify the more than 15 different shapes of the cloaca. Chicks are often damaged or killed by squeezing them too hard when done by a novice handler. It takes years to learn how to do this right on top of learning what you are looking at.

Answer 2

Unless the chicks are of a certain breed, you will not be able to unless you are a professional chick sexer. Some breeds have different colored genders, and some have different wing feather lengths.

Answer 3

It can be hard to tell a Bantam hen from a rooster when they are young. The rooster typically has large feet and a more prominent crown.