If it lays and egg, it is a girl Last edited: As the duck matures, the voice changes. A fully mature Muscovy male, about three years old, named Captain. There are some breeds that have subtle ways to tell apart the males in females. A view directly from the side is best, but other angles are helpful as well. This is quite reliable.
There are a few basic things that we are looking for when we attempt to identify sexes. Gently pinch them together. Rubbing should help gently push the vent back in place. He will still grow more, but he already has more than most females will ever get. Males will have longer bodies; females will have shorter bodies. Hold the bird upside down. Their caruncles are much fuller and more prominent, and they are approximately double the size of the females. A prime example of this is the mallard breed, in which the females are mostly brownish and gray while the males display a rich chocolate color on their chests, a white "collar" around their necks and distinct dark green feathering on their heads. Mitzi steps on her own foot, the signature female pose. Size Counts If you're unable to distinguish any differences between two or more ducks, take a look at their sizes. Boys voices will change from typical duckling peeping noises to a more monotone peeping. This difference is too vague to be reliable until the ducks are nearly fully feathered about twelve weeks old. I suppose Muscovies are always girls then. Males will have flatter, wider, straighter bills, and females will have pointier, more narrow, curvier bills. Done incorrectly this can seriously harm your duckling. Their legs are thinner and their feet will be smaller. Voice The males will lose their voices as they transition from adolescents to adults about when they are twelve to sixteen weeks old and will appear dumb for a while. One of those was Mitzi, whom you can see earlier on the page. Click any image to enlarge it. As they mature, however, female ducks develop a more distinct and loud quack, while male ducks quack softer and quieter. Both the males and females are talking simultaneously here, but you can still clearly hear the difference between the drake and his girls: Their sphincter muscles are pretty strong. Drakelets should have some red caruncling by the time their flight feathers grow in. A full-grown Muscovy drake, King, poses in the sunlight for a head closeup. This is fine for telling adults apart, but not very helpful for ducklings. You can always sex them again later when they get a bit bigger.
Video about how to determine the sex of ducks:
How to tell if a grown duck is a MALE or a FEMALE (how many of each do WE have?)
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