At dog play group this week, while Ginger ran with her playmates, I watched Eastern Bluebirds and Tree Swallows compete for nesting sites. This rivalry is very common.

In one corner, we have a bluebird just getting ready to settle down.

Also wearing blue is a pair of tree swallows looking for a domicile.

There seemed to be a lot of trash-talking going on.

So, for about half an hour, I watched some aerial antics as the competitors went at it. My little camera caught some of the action.

We’ll see, later this month, who ends up where — it seems like the swallows often win out but this bluebird was feisty.