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May 25, 2018

Male vs Female: How to Identify Adult Ducks


A common question we get is if a duck is a male or female. This can be determined using a few different methods. Most ducks can be identified by using a couple of physical attributes while others can be identified by their coloring.

Size

Simply put, male ducks are usually bigger than females. The size of the head and body are usually bigger and bulkier. Of course, there are exceptions such as with an abnormally small male or abnormally large female, but this is a good general start.

 

 

 



Tail

A male duck of all common breeds (except the Muscovy) grows a distinctly curled feather in its tail. The lack of a curly feather, however, does not indicate a female as it could have been pulled or molted. However, a curly feather does indicate a male. The curly feather appears within about eight weeks.


As an interesting aside, the reason all domestic male ducks (besides the Muscovy) have curly feathers is because they all originated from the Mallard breed and Mallard males have a curly feather on their tail. You look at all other wild ducks - Teals, Wood, Mandarin, Shoveler, Canvasback, etc - and none of the males have a curly feather on their tail. Only the Mallard male has a curly feather - so that is one of the reasons we know that all domestic ducks where the male has a curly feather originate from Mallards.

Voice

Sadly, the cute chirp of a duckling starts to change within several weeks. By eight to ten weeks males have a deep, raspy voice while females maintain the loud QUACK. For practice you can listen to our video of male and female duck’s voices.


Coloring

There are breeds of ducks that are sex-linked in their coloring. The best examples are the Mallard and Rouen breeds. Both males and females start as a black and yellow ducklings and turn brown once they get their first feathers. But when they start to get another set of feathers at about 12 weeks, the males begin to get their green heads, cinnamon chest and silver belly. For some other breeds like the Buff, Fawn and White Runner, Khaki Campbell, Welsh Harlequin and Silver Appleyard, the males will have a different coloration in their head and/or body feathers, though not as striking as the Mallard and Rouen.

Some breeds have a different colored bill for males and females. This is true of the Khaki Campbell and Welsh Harlequin where the males have lighter colored bill than the females.

If All Else Fails

If you still cannot determine the sex by the size, tail, voice, or coloring, there is vent sexing. We will be covering this in a future post, so stay tuned.

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