This video from Bermuda says about itself:
Bermuda Petrel Chick Gaining Adult Plumage – May 30, 2017
We’re excited to share a brand new live viewing experience featuring the critically endangered Bermuda Cahow, a kind of gadfly-petrel that nests nowhere in the world except rocky islets off the coast of Bermuda. In the early 1600s, this once-numerous seabird was thought to have gone extinct, driven out of existence by the invasive animals and habitat changes associated with the settlement of the island. In 1951, after nearly 300 years, a single bird was rediscovered, and since then the species has been part of a government-led conservation effort to revive the species.