I've often had five or six jays around my yard at the same time and they seem to get along fine but yesterday, for some reason, these two had some kind of issues and for about ten minutes just kept after one another. They would fly into the air and confront one another like this, then if one went to land in a tree the other would go after him and chase him out.
Another view here: https://365project.org/gardencat/this-and-that/2021-05-20
