Nesting begins in late October, when adults arrive at Bermuda, and nesting is loosely colonial on small islets off Castle Roads. Nest is in a crevice or burrow (most of these now artificial and maintained and monitored by Senior Terrestrial Conservation Officer and staff). Nesting birds often commute large distances from breeding to foraging sites.
Eggs: 1, white; breeding from late October through early June.
Nest is a bare scrape, occasionally lined with grasses or other plant matter.