Bruce the NZ kea forges alpha status with a sword-like beak
Bruce, a New Zealand kea missing the upper portion of his beak, has learned to use his remaining straight lower beak like a weapon to dominate male rivals at Willowbank Nature Reserve. In a four-week study of nine males and three females, he led 36 combative interactions, secured feeder access on 83% of recorded days, and attracted preening from subordinate males, while showing the lowest stress markers among the group. The researchers highlight Bruce’s innovative problem-solving and note that disability did not prevent him from achieving alpha status, a finding compared to high-status individuals in primates, though long-term dominance remains uncertain.
