Thanks for the tip @sourland, appreciate the advice!
Generally one is a lot louder than the other, which makes me think female / male, but when the mood strikes the other seems to be able to well & truly hold his or her own, which brings me back them both being girls 🤷♀️
They do have one...
(1) Are you new to chickens / when did you first get chickens?
No chickens, but I'm (very) new to the world of backyard ducks.
(2) How many chickens do you have right now?
None, however am proud parent to two Pekin ducks - Mr Miyagi (who loves to snap at flies with his beak in a valiant effort...