You may be tempted to pick up a baby bird or other young wild animal that appears to be on its own, but this is not a good idea. Recently, the Arizona Game and Fish Department has received several calls and visits from good Samaritans who are trying to do the right thing by "rescuing" baby birds. However, they were actually causing more harm than good.
At this time of year, many baby birds can be found on the ground. This is typically just a normal part of learning to fly.
Young animals are often left alone for hours at a time while their parents gather food. However, if an animal is shivering, sneezing, very lethargic or obviously injured, then you should call a wildlife rehabilitator.
The Arizona Game and Fish Department has a list of wildlife rehabilitators and their phone numbers available at the department's Web site at azgfd.gov/urbanwildlife.