Nest in hole burrowed in clay embankments, burrow approximately 30 cm in length; occasionally in a rotten trunk or even at the entrance to limestone caves; also near burrows of sand crabs (Raffaele et al. 1998, Garrido and Kirkconnell 2000, Kepler 2001). Lining of nest and nest entrance with grass, lichen, small feathers, and a sticky, almost glue-like substance, apparently; these components may act as a sealant (Raffaele et al. 1998, Kepler 2001). Eggs, usually 3-4, white, are the smallest of all reported for the genus (Garrido and Kirkconnell 2000, Kepler 2001). Both parents may incubate and provide care for nestlings. Young are altricial. Some anecdotal evidence suggests that provisioning rates may be, for each chick, up to 140 times per day.