Swallows over my front door

Since I moved to NM, these baby swallows were my closest neighbors, having a nest above my front door. I thought it was due to the house being vacant almost a year, but later saw a nest at the community center mail room, so they aren't afraid of people. Some images show how much they grew in one week, and a week later they had left the nest. I left the nest alone, and it has been reused several times.