The bird on the left is the mom - unless daddy birds also sit on the eggs. I'm using an old Hikvision DS-2CD3332-I eye-ball camera that I had in a junk bin. It's mounted about 6" from the nest. I did open it up and manually adjusted the focal depth to the edge of the nest. Unfortunately, the Phoebe birds like to cram their nests into corners, and this was no exception. With only a few inches between the top of the nest and the floor boards of my porch, I couldn't get the camera high enough to see into it.
I'm using
Blue Iris to record.
What's interesting about the bird's behavior is how brutal they were with the chick. They were beating the snot of out it trying to make a point. Even after the dad bird left, the mom still kept wailing away at the baby. It blows my mind how these things know how to breed, build nests, feed/care for their young - all without any previous generation teaching them. Talk about being driven by instinct.