Tree Swallows versus Eastern Bluebirds

First I saw the Eastern Bluebirds at this house in my neighbors yard although this house is not a standard bluebird house.

(They don't know what our specs are for their houses!!!)

Then 5 days later I get the shot of Tree Swallow coming out of the same house. Guess the Tree Swallows are going to run off our Bluebirds. Any suggestions?