Identificaciones de bluejaybluejay

This observation is for the Blue Jay.
A bird (juvenile grackle?) hit the front window. A few minutes later, a Blue Jay had arrived and was busy plucking the feathers off the back of the bird. After plucking most of the feathers away, it pecked through the back (last photo) and made several trips back and forth to carry away meat. Later it apparently managed to flip the bird over and pecked through the abdomen under the rib cage, leaving a large hole in the abdomen. It removed the intestines but ate most of the other organs. The rest of the dead bird then disappeared overnight.