In 2007, a 29-year old yellow-headed Amazon named Poncho gratefully accepted one of his own discarded feathers from his human Cheryl Rampton and promptly used it to scratch a hard-to-reach itch on the back of his head. Poncho repeated this performance in 2008 as well.
Poncho, a 30 year old double yellow headed amazon parrot, using a feather to scratch his head. He figured this out on his own, he’s so smart :)
via Animal Cognition