Conservationists in Australia are celebrating the fledging of a palm cockatoo chick, a species considered endangered in the country. It fledged from an artificial log hollow installed on a tree for breeding cockatoos. The structure is one of 29 such spaces created as part of People For Wildlife’s (PFW) Breeding Habitat Restoration Project, in partnership with Apudthama Traditional Owners and palm cockatoo expert Christina Zdenek.
The palm cockatoo (Probosciger aterrimus) is a stunning large parrot, with smokey-black feathers, red cheek patches and a dramatic crest. As part of their courtship displays, males fashion tools out of sticks and seed pods to drum on hollow trees.
Palm cockatoos live in Australia and on the neighboring island of New Guinea. In Australia, they are confined to a patch of rainforest and savanna woodland on the remote Cape York Peninsula of northern Queensland. They’re one of Australia’s most threatened parrots, with possibly fewer than 2,000 left in the wild.
“They disperse the rainforest seeds,” Robert Heinsohn of Australian National University told U.K. state broadcaster BBC. “They have these massive great beaks, and they’re the only creatures that can break into some of the larger seed pods.”
The species is a slow breeder. Females lay just one egg roughly every two years. For nesting, the mating pair carefully selects a hollow in an old-growth tree and builds a deep platform out of sticks, where the female lays her egg.
The loss of such natural hollows is a major threat to the species. Zdenek told Mongabay by email that natural palm cockatoo hollows have been lost primarily due to “unnaturally hot fires” and land clearing for bauxite mining.
With the goal of boosting breeding success, the conservation team created several types of artificial and enhanced hollows. They designed them based on years of research findings and local knowledge to meet the birds’ specific needs.
So they were pleasantly surprised when a pair laid an egg inside one of the artificial hollows just one month after installation. Using remote cameras to monitor the nesting site, they captured the moment the fledgling chick emerged from its nest.
“Witnessing a successful fledgling event is rare as it is,” Zdenek said, “but to do so out of a hollow erected by humans … that’s incredible!”
The team say they hope this marks the beginning of a conservation comeback for palm cockatoos in Australia, and plan to grow the project if funding allows.
“This is truly hard work paying off,” PFW executive director Daniel Natusch said in a press release. “It’s a testament to the power of collaboration between Traditional Owners, scientists, and conservationists to ensure the survival of one of Australia’s most fascinating birds.”
Banner image: A palm cockatoo. Image by Deborah Metters via iNaturalist (CC BY-NC).
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