Each chicken breed will have different characteristics for their chicks.
For example: White Leghorn chicks are a cute lemon yellow color, that will change as they grow and get their adult feathers in, which are white. Golden Sex Link chicks are a soft, reddish yellow, with darker stripes on their back for the females, and a creamy white for the males. Black Australorp chicks are black with a little bit of yellow in their fluff, but grow into black chickens as they get their adult feathers in.
If you mix up your chicks, the only way to tell them apart would be to wait until they get older and can determine what breed they are. Or you can put a spiral leg band on them (anklets!) and as they grow older, change the bands out for larger bands to accomodate thicker legs.
Well that's simple! you can tell them apert if you mark them or by their behavior.
apart from chickens?
i dont know, the chickens won't tell me
Definantly. Chickens are social creatures and like to be apart of a flock, but two is great.
The answer depends on what you want tell it apart from!
it depends what you are telling apart
Chickens are known as females. Roosters are known as males. Roosters have that giant tale which I believe attracts the mate.
Meerkats tell each other apart with smell and dominant
No! In fact they can choke on it. When you go to the feed store tell them what age chickens you have and they will help you select the appropriate feed.
Depends what "them" is
As humans we have a hard time telling penguins apart. However, They can tell each other apart by distinct vocalizations.
For the average human viewer there appears to be little way to tell a Pill Bug apart but they do have markings on there backs which can allow them to be told apart.