Someone gave me the bird

I was watering the flowers last evening. As I opened the gate in the privacy fence to go into the backyard I discovered a dead bird on the stepping stones. It was a robin and I swear it looked like he fell out of the tree. Maybe he got drunk on fermenting fruit from a neighbors apple tree. He was not torn up like a cat had played with him, in fact, he looked like a stuffed bird from an antique store or taxidermy shop. He was stiff, but the flies had not gotten to him yet. Very weird. If someone sends me a dead mackerel, I know what that means. I am unsure about a stiff bird.