Bird Courtshipping (Bio)

In Biology we've started learning about animal behaviours. One of the behaviours we are learning about is courtship behaviour. For this, I will be going over the King of Saxony's courtship behaviour as a bird of paradise. 

Courtship - is a behavioural feature in animals such as birds either dance, build or sing to attract a potential mate 

For these birds of paradise what females find attractive are their head feathers
So the longer the head feathers the more likely they are to find a mate and increase their reproductive success rate which in the end benefits them. These head feathers however have no other use other than being an ornament for attracting a mate. 

However, to even attract the attention of a female so she can get a good look at his head feathers, these males birds will perch themselves on a forest canopy in exploded leks and sing to attract the attention
of a female who could be a potential mate.  

Other than having these head feathers to find a mate, these feathers have no other benefits to these birds as they do not increase survival chances for the bird.