�������t¶��

The lyrebird's tail is also flipped dramatically over its head during the courtship display, as in the above photo.

The quirky birds with long, pointed tail feathers are known for the male’s elaborate courtship display in which air sacs in the neck are inflated to make a popping sound.

This is what’s known as “the light show,” a once-a-year courtship display by the synchronous firefly formally named Photinus carolinus.

Similarly, the cordon bleu finch, a common pet bird, was thought to have a simple hopping courtship display.

The researchers also noted that the crest of the cockatoo was not raised – something the birds do when aggressive, fearful, surprised or as part of a courtship display - and concluded this probably meant Frederick’s bird “felt safe and calm” while being sketched.