It lives in groups ranging from 2 to 10 adult birds.

Only rarely do adult birds attempt to drive away predators.

The population is estimated at less than fifty adult birds.

The population is estimated to be less than 250 adult birds.

As of 2008, only 25 adult birds had been counted in the wild.

A 1998 estimate place the population at 42,000 adult birds.

The population is estimated at between 5,000 and 11,000 adult birds.

Altogether, less than 10,000 adult birds are believed to remain.

The total population is believed to be at least 250 but not more than 1,000 adult birds.

A 2004 population estimate established that around a total of 65,000 adult birds are alive.