Young birds which are in immediate danger from a predator or traffic, may be placed out of harms way, a short distance away. Do make sure you leave it in hearing distance of where it was found.
Birds have a poor sense of smell, so briefly handling a young bird will not usually cause its parents to abandon it.
A fledgeling should only be moved as a last resort - for example if it has been injured or genuinely abandoned. In this case put it in a dark, warm box and bring it to us.
Further information on fledgling birds can be found on the RSPB website