In a few weeks they will look like this. These are the babies that were sitting beneath the tree swallow mom who was flattened out in the nest box as shown HERE. These guys are about 6-7 days old I think.
And here are the 10-12 day old blue bird babies. Mom and pop were hovering around the fence line as I was taking pictures. Mom came back with a fat grub hanging from her beak so I took my pictures quickly so as not to interrupt the constant feeding that is going on.
I lifted this one little guy up a bit so his feather development was more visible in the picture. They will be all grown up and flying around in a small herd before you know it. The family groups stay together for several weeks after the babies fledge and it is not uncommon to see two set of parents and babies forming bands.
Grow babies grow!!