This video says about itself:
Brown Kiwi Courtship Spectacle – Wild New Zealand – BBC Earth
9 June 2017
It’s the dead of night in the primeval New Zealand forest and something is stirring. About the size and weight of a stout chicken, the Brown Kiwi is closely related to the Ostrich. In this intimate footage a female Kiwi is heard singing an alluring serenade, so love must be in the air.