The earliest documented
record comes from the early 19th century. Evans and Buckley (cited
in Pennington et al. 2004) give breeding records for the island.
In the early 1960s
In the 1970s Furness
(1983) estimated the population to be between 30 and 40 pairs.
Birds continue to breed
on the island, although the species is poorly documented, and is often only
recorded as present – which is rather demeaning to the species, which in some
places has seen a drastic decline. If there are more personal records for this
species, they would be most welcome. It is hoped that more accurate
observations are made in the future of both breeding and passage for this
species.