I snapped this photo of a Blue Jay (Cyannocitta cristata) with an acorn in its' mouth through my picture window in the living room. It took it to a tree to open it. This may solve the mystery of how the oak trees sprout in the garden at my school. It is completely enclosed by walls so no squirrels or other animas can bring them in and bury them. Birds, however, would have no trouble bringing in acorns!
Blue Jays are colorful, loud, and boistrous birds. They make many different sounds with their calls. These birds will dive at and harass cats that they see as a threat. The scientific name Cyanocitta cristata comes from Greek, cyanos = "blue" kitta = "jay" and cristata = "crested".