These displays are also used to attract a potential mate.
Big Al's first attempt at attracting a mate ends in a close call.
Some argue hair on the head functions in attracting a mate.
For example, humans have the ability to say and do anything that they feel may benefit them in attracting a mate.
Like birds, fish produce a variety of calls to attract a mate.
He would like to know, for example, whether they are better able to attract mates or to produce more offspring.
The main reason for calling is to allow male frogs to attract a mate.
Finally, he shows the nest to females, in effort to attract a mate.
A young one, by the look of it, trying to build a nest that'll attract a mate.
I believe that is an ancient mechanism to attract a mate.