Global Short Term Trend: Increase of 10 to >25%
Comments: Through captive breeding, the total population increased from 22 in 1982 to around 330 in 2008. However, the increase occurred as a result of intensive management rather than from natural population growth.
Global Long Term Trend: Decline of >90%
Comments: Apparently the species was rare and declining even in the late 1800s. The population declined greatly between the late 1960s and early 1980s, though count data for that period are problematic. Population reached a low of 22 in 1982, when captures began to establish a captive breeding program. No individuals remained in the wild by the late 1980s.