Hmmm--had to ponder this for awhile, so I broke out a fifth of "Old Crow". Well they did use Caledonian crows--perhaps if it were independently replicated with American crows...
https://www.youtube.com/watch?v=JHFXG3r_...

Blah... blah... blah... Minus 1 from me. Read the entire experiment carefully, Then read the actual procedure. In fact such studies with crows are well known. They can count to seven, have 30 words with three dialects, etc., etc. They remain bird brains because their brains are the size of, well, who knew?, of BIRDS. It is nice. I like crows. I give them props. But the experiment does not prove that crows will get on the right school bus, or, arriving without their homework, will think to blame the dog.