This mockingbird video from Denton in Texas in the USA says about itself:
A young mockingbird was left in our backyard today while its parents went off gathering food. The young bird stays mostly near the lower bird bath. We keep this specifically for young birds so they can easily get water during the first 24-48 hours out of the nets.
In the last half of the video our young explorer makes it up to the hackberry tree where his mother rewards him with some food.