What unique acrobatic movement sets nuthatches apart from many other bark-foraging species?

Answer

Scaling tree trunks in an upside-down fashion

Nuthatches are fascinating to bird watchers primarily because of their unique ability to scale tree trunks head-first, defying gravity with ease.

What unique acrobatic movement sets nuthatches apart from many other bark-foraging species?
taxonomybirdanimalNuthatch