Carnaby’s Black-Cockatoo is one of the popular and iconic birds of Western Australia. But the spread of Perth and habitat loss means they are in trouble. Updated research from BirdLife Australia shows that flocks are getting smaller as the population of these large, white-tailed, black-cockatoos declines each year. Over 600 volunteers taking part in the Great Cocky Count have confirmed the trend in numbers dropping each year. A causality of urban sprawl, If the current trend continues, the Carnaby’s Black-Cockatoo population of the Perth-Peel Coastal Plain will continue to decline at a rate of roughly 15 per cent each year.