The latest population assessment for the blue-eyed cockatoo is in excess of 10,000 mature birds with a range of at least 20,000 square kilometers. It's Red Data Book classification has been assessed as Least Concern, no evidence of a population decline over the last 30 years has been found. I guess it's just not endangered enough.
I shall miss them if the zoo stops keeping them, I've always liked the blue-eyed cockatoo.