Young birds, nestlings or fledglings of many species are often found on the ground. Birds that do not yet have feathers (nestlings) are not ready to fly. If you can see a nest nearby that the bird may have fallen out of, you can simply replace the nestling. Parent birds will not abandon a nestling, even after human contact. If you’re not sure where the nest is, you can move the baby bird to a shady spot off the ground to protect it from predators and the parents may continue to care for it.
Fledglings are young birds that have their first feathers and are just leaving the nest. These birds are just learning to fly and may spend considerable time on the ground. Usually they do not need help. Parents are often close by, watching and feeding the youngster. If you suspect the parents are no longer around, i.e. neither parent has visited the young in 24 hours, contact a local wildlife rehabilitator to get the young bird to the help it needs. see list below