Sophie Bennett
Determining the sex of a newly hatched chick can be challenging, and there is no 100% foolproof method other than waiting for them to start crowing or laying eggs, which usually occurs between 12 and 30 weeks of age. However, as chicks mature, certain physical and behavioural characteristics become more apparent, making it easier to distinguish between roosters and hens. These characteristics include differences in comb and wattle size, feather type, body posture, and boldness or friendliness.
| Characteristics | Values |
|---|---|
| Observable changes in behavior or appearance | Roosters will be larger than hens |
| Roosters will have darker pink combs and wattles that grow faster and larger than those of hens | |
| Roosters will be more bold and friendly early on, while hens are less friendly | |
| Roosters will have spurs on their shanks, which will grow longer as they age | |
| Roosters will have longer feathers than hens, including long saddle feathers and tail feathers | |
| Hens will have smaller facial features, such as a smaller comb and wattles compared to a rooster | |
| Roosters will have an erect posture with their chest more forward and tail more upright | |
| Roosters will have a stockier body and thicker legs | |
| Roosters will have a large U-shaped comb, while hens will have a more V-shaped comb |
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What You'll Learn
Observe comb size and colour
While it is challenging to determine the sex of a hatchling chick, observing the comb size and colour can be a helpful indicator. The comb is the fleshy red crest on top of a chicken's head, and both male and female chicks have them. However, as the chicks mature, roosters tend to develop larger, brighter, and more pronounced combs than hens.
When observing comb size, it is important to compare chicks of the same breed, as different breeds have varying comb sizes. For example, a Leghorn hen may have a larger comb than roosters of a different breed. Typically, roosters will have larger combs than hens of the same breed.
In addition to size, the colour of the comb can also be indicative of the chick's sex. Roosters tend to have redder combs than hens. However, it is important to note that comb colour can be influenced by factors such as overall health, and there may be exceptions where a hen has a redder comb than a rooster.
While observing comb size and colour can provide some clues, it is not always a foolproof method for determining the sex of a hatchling chick. Other physical characteristics, such as leg thickness and overall size, can also be considered in conjunction with comb observations to make a more informed guess.
Therefore, if you are trying to differentiate between a rooster and a hen hatchling, pay attention to the size and colour of their combs, but also take into account other physical traits and behavioural cues as the chicks mature.
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Listen for crowing
It can be tricky to determine the sex of a baby chick, and there is no 100% foolproof method to tell if you have a hen or a rooster. One way to find out is to listen for crowing. While hens can sometimes crow, this is rare, and they are unlikely to do so as chicks under 16 weeks old. Roosters, on the other hand, will usually start to crow between 12 and 30 weeks of age. Some sources state that cockerels can begin to crow as early as two months old, while others say that this can happen as late as five months.
Cockerels' first attempts at crowing are often feeble and comical, but with practice, their crows will get louder, more frequent, and more forceful. So, if you hear one of your chicks attempting a weak crow, you may have a rooster on your hands. However, it's important to note that even crowing is not always a definitive sign, as some hens have been known to crow as adults.
In addition to listening for crowing, there are a few other methods you can use to help determine the sex of your chicks. One is to examine their feathers. Roosters often feather in patches, while hens feather more uniformly. Roosters typically have longer, pointed hackle and saddle feathers, which may also be more colourful than the feathers on their main body or chest. Hens, on the other hand, have shorter, more rounded feathers, and their hackle and saddle feathers blend in with the rest of their feather pattern or colour.
You can also look at the comb and wattles of your chicks. The comb is the fleshy crest on top of a chicken's head, while the wattles are the fleshy lobes that hang from the lower jaw behind the beak. Roosters typically have larger and redder combs and wattles, which may become noticeable around eight weeks of age. However, it's important to note that not all breeds of chickens have combs and wattles, and some hens may also develop large combs and wattles.
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Observe body development and posture
When it comes to body development, male chicks generally develop larger legs and feet compared to females. During a growth spurt, male chicks may appear to be all legs for a while, which is less common in female chicks. Roosters will have thicker legs and may develop spurs early in their development. Male chicks also tend to have larger bodies and heads, presenting a more robust appearance.
Regarding posture, male chicks usually display a distinctive upright and assertive stance. This cocky posture becomes particularly noticeable when they are surprised. Roosters often exhibit a more upright posture than hens, giving them a jauntier and more alert appearance. This trait can be a helpful indicator when trying to differentiate between males and females.
While these indicators can be helpful, it is important to note that there can still be some ambiguity. Chicks mature at different rates, so patience and close observation are required when trying to determine their sex.
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Observe feathers
Chicks are fluffy and covered in down during their first week of life. Some feathers may emerge after the first week, but they will be small and may not be noticeable right away. By the seventh or eighth week, chicks will undergo their first partial moult, developing new feathers and establishing a pecking order.
Between the fifth and fifteenth week, your chickens will be in their most awkward phase, sometimes called the "teenage stage" or "dinosaur stage" due to their resemblance to mini velociraptors! During this time, you may notice the first signs of adult feathers. By the thirteenth week, you should see adult feathers.
If you are unable to distinguish between your hens and roosters by this point, you will likely be able to do so by the sixteenth to twentieth week. One of the key indicators is the development of saddle and hackle feathers. Roosters will have long and pointy saddle feathers, while hens will have rounded ones. The saddle feathers are long feathers that cover the rump and base of the rooster's tail. Hens have feathers there too, but they are shorter and are not typically referred to as saddle feathers.
Roosters also have a main sickle feather in their tail, which is the main long feather. Additionally, roosters have pointy-shaped hackle feathers (neck feathers), while hen hackles are shorter and less thin. However, do note that hen hackles can also look a little pointy, so it is best to examine the feathers further up the neck toward the head for a more noticeable difference.
Some breeds of chickens are easier to sex than others. For example, Barred Plymouth Rocks are an auto-sexing breed, although this is not 100% accurate. In general, auto-sexing breeds will have male and female chicks that hatch with different colour patterns, allowing you to immediately tell the sex.
Another breed with noticeable differences is Silkies. Young male Silkies will develop streamer feathers (long feathers that stick out from the crest) around seven weeks of age, while hens will have more rounded, even crests. Male Silkies will also have a stockier body and thicker legs, as well as a large U-shaped comb, compared to the V-shaped comb of the hens.
Polish chickens, on the other hand, can be tricky to sex at a young age. Polish roosters will develop larger, redder combs and wattles, while hens will have smaller and paler ones. Polish roosters will also have longer tail feathers and be overall bigger and heavier.
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Observe behaviour
Behavioural observation is a key way to identify a chick's sex as it matures. However, it is not a foolproof method, and it is difficult to determine a chick's gender when it is very young.
Roosters will be larger than hens, with darker pink combs and wattles that grow faster and larger. Roosters will also be bolder and friendlier when they are young. Hens, on the other hand, tend to be less friendly at first but catch up in the friendliness category after they begin laying. Roosters usually become more stand-offish as they get older. If you have more than one rooster, they may "chest bump" and assert themselves with each other.
Another behavioural indicator is the sound they make. While crowing is a good indicator of a rooster, it is not foolproof as some hens do crow. Usually, chickens start crowing or laying eggs between 12 and 30 weeks old, though some mature earlier.
In terms of physical behaviour, you can observe the way the chicks carry themselves. Roosters have an erect posture with their chests forward and tails upright. They also have stockier bodies and thicker legs.
When the chicks are around 8 to 10 weeks old, they will start getting pronounced hackle feathers (feathers at the base of the neck) and saddle feathers (where the back meets the tail). A hen's hackle and saddle feathers will be rounded, while a rooster's will be long and pointy.
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Frequently asked questions
There is no 100% foolproof method to tell if your hatchling chick is a rooster or a hen until they are fully grown. However, you can look out for certain characteristics such as combs and wattles, which tend to be larger and darker pink in roosters.
Rooster hatchlings of certain breeds may have different plumage colours than hens. They may also develop spur-like features on their shanks, which will grow longer as they age.
Roosters tend to be bolder and friendlier at an early age, while hens are less sociable. Roosters may also try to perform behaviours such as crowing and jumping on the backs of other chicks at a young age.
Yes, one method is to purchase sex-linked chickens, which are cross-bred. This allows you to determine the gender of the chick at hatch based on their colouring. Alternatively, you can purchase sexed chicks from a hatchery, although this method is not 100% accurate.
