Unique White bird

by Jane
(New Braunfels, TX)

The small beautiful white bird depicted in the attached photos has been a mystery visitor in our backyard for about six weeks. "He" has adopted a flock of Chipping Sparrows, as well as their habits. They, in turn, have accepted him, so they eat, nest, and hangout together in our trees.

We thought at first he was an escaped parakeet, but his small size seems to preclude his being a member of the parrot family. By small, one can readily estimate his size by comparing him to the Chipping Sparrows on the feeder with him.

Can you help us identify him? We would really appreciate it if you could do so, as we then might be able to determine his vulnerability and subsequently work at a solution to safe-guard him.