Yes as long as they aren’t in strong wind. They’ll probably love being outside an hr may be a little long for first time though you’ll just have to watch and make sure they don’t chill. :welcome
@Bubbles85 How old are your ducklings? putting them outside before they completely feather in is asking for trouble if it's cold and they have no heat lamp. Food and water isn't going to keep them warm. Bringing them inside to warm up and then taking them back outside to a cold rabbit hutch...