This video says about itself:
14 November 2017
Watch a breeding pair of Bermuda Petrels return to Nonsuch Island, Bermuda after months out at sea. They will spend the next few weeks courting and copulating inside their underground nesting burrow.
The CahowCam is a collaboration between the Cornell Lab of Ornithology and the Nonsuch Expeditions. You can watch the cam live at http://allaboutbirds.org/cahows and learn more about Nonsuch Island’s environs (including the cahow) here.
From the Cornell Lab of Ornithology in the USA:
Bermuda Cahows Return To Nonsuch Island
After spending months foraging over the Atlantic Ocean, Bermuda Petrels (also known as “cahows“) have returned to their breeding grounds on Nonsuch Island, Bermuda, to court, copulate, and spend time with one another in the nesting burrow.
The cam pair’s return signals the onset of the breeding season and an opportunity to follow and learn about the breeding ecology of one of the most endangered seabirds in the entire world. Thanks to our partners at Nonsuch Expeditions, we also have access to expert commentary from cahow biologist Jeremy Madeiros during his weekly check-ups on the adults and chick (like this highlight from November 13).
Breeding pairs typically return to Nonsuch Island every year in early November to court and mate before venturing back out to sea for most of December. The cam will be offline during December for maintenance, but will be back online before the petrels arrive to lay in early January, when the female will return to the burrow and lay a single egg. Stay tuned for another year of discovery in Bermuda!