A census in 1988–89 recorded roughly 450 birds, although that number declined sharply over the following decade, due to causes not fully understood. By the late 1990s and early 2000s, censuses suggested that the bird's numbers had stabilised at about 350 adults.
In 1988–89, a census counted about 450 birds; however, their numbers declined substantially over the subsequent decade due to unclear causes. By the late 1990s and early 2000s, censuses indicated that the bird population had stabilized at around 350 adults.