The movement involves swinging along the underside of branches with their beaks and feet, similar to how primates swing between trees.
To move along narrow branches, a parrot can hang from a branch with its beak, swing its body sideways and grab hold farther along with its feet. The newly described gait,Parrots “are specialized for climbing and moving around in the trees,” says biomechanist Michael Granatosky of the New York Institute of Technology in Old Westbury. But, he wondered, “what would happen if you flip a bird upside down or make them go onto the tiniest possible?”) to the test. Birds placed on a suspended bar just 2.
“I see this as one of many different beak-assisted gaits that parrots use,” says biomechanist David Lee of the University of Nevada, Las Vegas, who was not involved in the study. The birds typically live in dense forests where flying can be difficult, so sometimes vines and fine branches provide the only paths, he says. “They’re navigating complex 3-D environments all the time.”
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