[CRUDite]

They know how to use glass. We had a rooftop area enclosed by glass and the crows would frequently corral pigeons there and kill them, either directly pecking them or indirectly chasing them into the glass. They may know how to use it, but what is it? This is another question..One morning i heard clicking / tapping coming from upstairs near this roof top; up the stairs i went, i peered over the top of the stairs toward the door to the rooftop, and saw two of them tapping the glass, then looking at each other, then tapping the glass again. They saw me and flew off in a panic. I may be anthropomorphising but it sure did look like they were sizing up this wonder material between them! I felt like i had seen a window into their world in that moment before i was spotted.