Bob inspects the damage caused by Yellow-tailed Black Cockatoos as they’ve broken open a small tree trunk in their search for the chunky grubs inside. The hollow chamber in the wood is where the grubs were picked from. It’s hard to imagine the strength that’s required of the beak and jaw to rip a tree apart like this.
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Have never seen them do damage like this though. Must have been quite a few of them working together.
When living in Sydney they used to come through and completely devastate gardens especially if there were anything like passionfruit growing.