The birds in my mailbox

There are two tiny swallow-like winged people who moved into the newspaper slot beneath my mailbox. They have white bellies and deep iridescent bluish heads. Lots of feathers and nesting materials far back in the narrow wooden box. They are confident little people, yet are tolerant of me picking up my mail without dive-bombing my head. Can you tell me something about them like who they might be? Might there be babies? Do you think they might like French fries or pizza?

What you have are Tree Swallows nesting in your box. They are cavity nesting birds that will use bird boxes, holes in trees and, apparently, your newspaper box. They line their nests with feathers and will lay 4-6 white eggs. The female will incubate the eggs for about two weeks, and she is not deterred by people and will stay on the nest. After hatching, the young will take 18-21 days to develop and be able to fledge from the nest. Their diet consists of insects. These birds are beautiful acrobatic flyers and wonderful to observe – enjoy!