Weird Happening

Just as I was about to go for my walk I heard a thump against the window. The blinds are down. I expected to look out and see a mourning dove sitting on the deck like happened a few days ago. I opened the door to the deck and there was a blue jay just flying up from the deck to the ash tree about 15’ off of the deck. He flew up to a high branch, looked at me for a few seconds. Then he just flew off.