According to Texas Parks and Wildlife , hundreds of young wild animals are mistaken as orphans, each year, and turned over to rehabilitators for rearing. This happens most frequently to baby birds and to fawns. When in doubt, call a wildlife rehabilitator or your veterinarian for advice.
Bad weather can sometimes cause birds' nests to fall out of a tree.
If the nest has been damaged, place it in a small basket, such as a strawberry basket, and place it in the tree. If necessary, use twine to secure it. If you are unable to locate the nest, contact a wildlife rehabilitator for instructions. If the baby bird already has feathers and does not appear to be injured, leave it alone and keep an eye on it from a discreet distance. Watch for a parent attending the bird or foraging closeby.