I noticed three separate families of red-winged blackbirds today. Adults were feeding this one youngster who was quite well fledged and moving around freely. I didn't notice any siblings nearby so he may be the only one from the nest to survive. Another nest I've been watching has tiny just hatched blackbirds in it... the female was off the nest and the young were terribly vulnerable to predation as the nest was not well covered. The third family had several large young in the nest, not quite as well feathered as this one, but getting there. They were very vocal, calling for food with the urgency that young birds do so well!