I'm always saying Muscovy females do quack, yet so many so they don't, no they just generally prefer other vocals, i do find if a scovie is honking/quacking it's usually for a negative reason lol They are fighting, somebody poked, jabbed.. goosed someone or they are frightened.We are expecting our first winter storm and cold temps—down to −10F. I was out adding wind protection to the pen, the muscovies were out and about when one decided to try flight. I had not clipped their wings after they molted, thinking if I put them in the garden, they might need to fly to escape predators. However, one look at how very adept the scovy was at flight lead to an immediate wing clipping party on all five females. I had visions of one them trying the flight thing in a blizzard and ending up dead. I didn't know if the five females would flock together and take off or not, but I really did not want to lose any due to unclipped wings.
One interesting thing—I usually net them to catch them, but the net gave out so my husband and I were cornering and catching (him more than me—faster reflexes, I guess). The final female, when caught, quacked!! A genuine duck quack. In eight months, I had never heard a quack out of any of them, just cooing. They are in the smallest pen now and we may move them to our greenhouse tomorrow when the temps start droppping.
I definitely investigate if i hear several going off....
Whereas the mallard derived has to be the right sort of quack as they are forever making noises of some sort lol