The virus itself while highly contagious is actually fairly fragile (simple regular hand washing with soap kills it) so if you're very concerned, just wash your hands after handling the duck and dont put your hands on your face or in your eyes/mouth until theyve been washed - which should be fairly standard regardless of covid because they're animals and baby ducks especially can be quite dirty with all their mess making.
I'd be more concerned with making sure the new duck you get is sexed, since heading into winter when it will be more difficult to find ducks and having a poor gender ratio would be less than ideal
I'd be more concerned with making sure the new duck you get is sexed, since heading into winter when it will be more difficult to find ducks and having a poor gender ratio would be less than ideal