https://www.backyardchickens.com/t/242460/the-ultimate-list-of-duck-treats-and-supplementsWhat treats can I give my 1 week old ducklings? Also when can I let them outside to play it's in the 50s were I live.
always give them grit when feeding anything other than starer crumble. chick grit is best when very young.
as far as taking them outside I would wait till it's a bit warmer may low 60's and not windy and not letting them get wet. Down just doesn't have the insulation feather on top of it has and they can chill pretty easy.