These markings can help distinguish male and female individuals.

Singing is used to advertise territory, and birds can distinguish other individuals on song alone.

They are able to distinguish different individuals on the basis of song alone, which is integral to the identification of group members and strangers.

She can even distinguish individuals by the marks on their noses, the equivalent of fingerprints.

This can be used to distinguish individuals in the aforementioned genetic classes.

It was difficult to distinguish individuals or even see where they were going when they started out.

Tamarins in captivity have shown the ability to distinguish other individuals based on cooperative tendencies and past behavior.

The footage was of poor quality, making it impossible to clearly distinguish individuals or car registration numbers.

Then he began, in his mind, to distinguish different individuals within, consciously refusing as yet to attack the figure of Katharine.

At first exposure, it's difficult to distinguish individuals from their styles.