Willi wrote in message ...

Ravens are clever animals. They can count and have a concept of numbers
up to 6 or 7 from what I remember.

Quite a few years ago we were hangin' around the tent in a Yellowstone
campground and in an hour or two I had a raven starting to say "Hello".
Well, it was coming out "Caw-woo" or something like that. Alas, we
left the next day to somewhere else so I never got to finish. He was
around the loop we were on every day and I thought it would be cool for
the next people if he started begging by saying "hello" rather than just
being obnoxious.

Jon.
PS: Jellybeans were the "treat" I was using.