[tunap]

Never saw that, thx. His leap of faith worked out well for them. Another good bird IQ documentary, Nova's Inside Animal Mind: Birds... https://www.youtube.com/watch?v=-spBaywak7M

An even better read, IMO, but I am partial to the Corvus corax... https://www.goodreads.com/book/show/254704.Mind_of_the_Raven