My Saguaro is about 20+ feet tall. About 20 years old or so. There is soooooo much bird activity in it. Here is a baby Starling. Starlings are bad invasive birds. I don't like them much. They take over the Gila Woodpecker nests. The GWP actually does the nest creating, digging the pith, burrowing etc., has it's babies then the Starlings take over.
There were two baby birds in that cactus in my frontyard. Some how they made it to the backyard without being eaten by the neighbor's cats.
Gila Woodpecker on my Organ Pipe