This video says aout itself:
Within The Burrow: 2017 Cahow Cam Season Highlights
27 July 2017
Go back inside the Bermuda Petrel nesting burrow and relive all of the highlights from the 2017 Cahow cam season. Watch Shadow, the cam star cahow chick, hatch from the egg and grow from fluffball to fledgling on Nonsuch Island, Bermuda.
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.