In two previous years we have had mockingbirds to nest in our grape arbor. They can be very territorial and agressive and would dive-bomb us if we got too close to their nest. I had already decided that if they nested in the arbor again I would remove the nest because we want to be able to enjoy our arbor and tend to the flowers and plants that are growing on it. Now that the bluebirds have begun nesting in the bluebird