We’ve been underestimating birds for far too long. Here’s a great story about how Australian cockatoos have figured out how to open lidded trash bins and how the knowledge has been spreading through local populations via social learning. There are even regional cockatoo cultures which differ in which bin-opening technique the local birds use.
“Teach each other” is a bit of an exaggeration, but they do learn from each other.
People have tried weighting the lids with rocks and bricks, but cockatoos have figured out how to deal with that, too. Watch this cockatoo systematically dismantle the defenses in order to get at the trashy goodies: