Crested Duck Male Vs Female: Easy Identification Tips

Crested ducks are medium-sized, classic domestic ducks that have been bred since the 1660s. They are great utility ducks, known for decent egg and meat production, although many people keep them purely for their looks, thanks to their beautiful crests and unusual appearance. They also have attractive yellow bills and light orange legs and feet, which add even more to their charm.

Aside from their beauty, one thing that is closely associated with these ducks is the health issue linked to the crest. In simple terms, the crest exists because of a deformity in the skull that leaves a small opening. Because of this, crested ducks can be more prone to neurological problems. The crest gene is also linked to a lethal condition during incubation—ducklings that inherit two copies of the gene do not survive to hatch, and even among those that do hatch, about a third will not have crests.

Another challenge people sometimes face when raising these ducks is telling males and females apart, since both sexes look very similar. To help anyone wondering whether their crested duck is male or female, here are some key features to look out for.

1. Vocalization

Vocal differences is one of the most reliable ways to sex ducks, especially in species or breeds where males and females look alike. Females typically produce the familiar loud “quack,” while males usually have softer, raspier, or whistling calls.

You can also use vocalizations to tell a male from a female crested duck.

Females have the classic loud, clear quack that most people associate with ducks. It’s strong, distinct, and easy to hear, often going between higher and lower pitches. Males, on the other hand, sound much quieter. Instead of a proper quack, they make a softer, raspy, almost whispery sound.

You can usually start noticing this difference from around 5 weeks of age. For example, if one duck has a low, quiet “quack” while another is much louder and more expressive, the quieter one is likely the drake, and the louder one is the female.

2. Tail Curl

Another helpful feature to look at is the tail shape, especially as the ducks mature.

Male ducks (including male crested ducks) often develop a slight upward curl at the end of their tail feathers. This curl is caused by a set of specialized feathers that naturally bend upward as they grow. It may start off quite subtle and not always easy to notice, but over time it becomes more defined and is a strong indicator that the duck is a drake.

Females, in contrast, keep a completely straight tail. Their tail feathers grow evenly without any upward twist or curl. So if you notice even a small, consistent curl in the tail, it is usually a reliable sign that the duck is male.

3. Crest Size

Another feature that can sometimes help is the size and shape of the crest itself. In some cases, male crested ducks may develop slightly larger or more prominent crests compared to females, although this is not always a strict rule and can vary between individual ducks.

Side Note: the ideal crest in these ducks is large but neatly centered on the top of the head. It should appear as one rounded tuft rather than being split into two separate lobes. A well-formed crest sits evenly in the middle of the skull and gives the duck its distinctive rounded appearance.

Because crest size can overlap between males and females, it is best used as a supporting clue rather than a stand-alone method for sexing crested ducks.

4. Size and Weight

Finally, size and body shape can sometimes give useful hints, although the differences are usually quite subtle. Males tend to be slightly larger, more robust, and may have with a thicker neck and a slightly broader head. Females are generally a bit smaller and can look a little more slender or streamlined in comparison.

These differences are easiest to notice when males and females are seen side by side, but they can be quite difficult to judge when a duck is viewed on its own.

In terms of weight, adult male crested ducks typically range from about two to seven pounds, while females usually fall between two to six pounds.