Claire Thompson
Male peafowl are referred to as peacocks, and female peafowl are called peahens. While the male peacock is known for its extravagant plumage and piercing calls, the female peahen is far more subdued in colour and appearance. However, differentiating between hen and male peacock chicks, or peachicks, is a challenging task. For the first few weeks of their lives, peachicks of both sexes are cryptically coloured, with colours ranging from yellow and tawny to darker brown and ivory. As a result, the only way to determine a peachick's sex is through close examination of the cloaca or the testing of the bird's excrement or blood. Once the peachicks are a few months old, male chicks tend to have longer legs and slightly darker feathers on their chests.
| Characteristics | Values |
|---|---|
| Colour | Male chicks are lighter in colour, while female chicks are darker brown. |
| Legs | Male chicks have longer legs. |
| Chest feathers | Male chicks have slightly darker chest feathers. |
| Behaviour | Female chicks often stay close to their mother and display fewer signs of aggression. |
| Weight | Males are heavier than females. |
| Wing feathers | Male chicks have barring on the back, while females have solid grey on the back. |
| Crest feathers | Male chicks start to develop crest feathers at 2-3 months. |
| Sexual maturity | Male juveniles begin to develop coloured chests at around five months. |
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What You'll Learn
- Colour: Male chicks are lighter, females are darker brown
- Leg length: Male chicks have longer legs
- Behaviour: Females stay close to their mother and are less aggressive
- Plumage: Males have lustrous blue and green feathers, females are duller
- Blood/excrement testing: A close examination of blood or excrement can determine sex
Colour: Male chicks are lighter, females are darker brown
When they are born, baby peafowls, or peachicks, are covered in light brown fluffy down and striped wing feathers. For the first few weeks of their lives, peachicks of both sexes have the same colouring, making it impossible to tell them apart. However, from three weeks to two months of age, male peachicks begin to develop darker feathers on their chests.
From around five months of age, male peachicks start to develop their distinctive coloured chests, and their tails begin to grow. The males' tail feathers are the lustrous blue feathers and bright train of tail feathers that the species is known for. The female peafowl, or peahen, is far more plain in its plumage. The most vivid coloration you'll see on a peahen is a bluish ring around the neck, and the rest of her body is mostly brown. These brown feathers help the peahen camouflage in the forest while she is nesting.
Peafowl are sexually dimorphic birds, meaning that the two sexes display different physical characteristics. However, these sex-linked traits are not expressed until the bird is a few months old. As a result, identifying the sex of a peachick requires more than a simple visual inspection.
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Leg length: Male chicks have longer legs
While it is difficult to determine the sex of a peacock chick, or peachick, there are some methods that can be used to distinguish between male and female chicks. One of the primary ways to do this is by observing the leg length of the chicks. Male chicks tend to have longer legs than their female counterparts. This difference in leg length is more accurate when comparing chicks born in the same clutch.
The difficulty in sexing peachicks lies in the fact that, for the first few weeks or months of their lives, all peachicks have the same coloration, regardless of sex. They are cryptically coloured, with shades of yellow, tawny, brown, light tan, and ivory. Thus, identifying the sex of a peachick requires more than a simple visual inspection.
As the chicks grow older, some sex-linked traits begin to emerge. Male peachicks will begin to develop longer legs and slightly darker feathers on their chests. The outer primary feathers of male chicks will also be more colourful, with hints of blue. However, these colour differences do not become prominent until the chicks are older, but still under the age of one year. The male peacock's long tail train does not fully develop until about three years of age.
In addition to leg length and colouration, the behaviour of peachicks in groups can also provide clues to their sex. Female peachicks often stay close to their mother and display fewer signs of aggression. However, these behavioural traits cannot always be relied upon for accurate sexing.
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Behaviour: Females stay close to their mother and are less aggressive
Behaviourally, female peacock chicks, also known as peachicks, tend to stay close to their mother and are less aggressive than their male counterparts. While this is a general trend, it cannot always be relied upon as a method of differentiation.
Peacock chicks are born with similar colouring, making it difficult to determine their sex through a simple visual inspection. However, as they grow older, male chicks begin to develop longer legs and slightly darker feathers on their chests. These physical characteristics become more pronounced as the males mature, leading to the development of their distinctive, brightly coloured tail feathers.
Female peacock chicks, on the other hand, remain relatively plain in appearance, with subdued colours that provide effective camouflage, especially when nesting. Their lighter body mass also contributes to their ability to fly short distances, allowing them to escape danger or predators.
The role of the mother peacock in raising the chicks further influences the behaviour of female chicks. Female peahens incubate and raise the chicks without assistance from the male, fostering a strong bond with their offspring. This close relationship may contribute to the tendency of female chicks to stay closer to their mother and exhibit less aggressive behaviour.
While the behaviour of peacock chicks can provide some clues, a more accurate determination of their sex can be made through physical examination or laboratory testing, especially after the chicks have had a few weeks to grow and develop distinct characteristics.
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Plumage: Males have lustrous blue and green feathers, females are duller
The male peacock, or peafowl, is known for its extravagant plumage, which acts as a signal to female peafowl, or peahens. The male's body plumage is often a brilliant blue and green, with a lustrous, iridescent quality. The peacock's tail, or train, is made up of 200 or more individual feathers, adorned with mesmerizing "eyespot" patterns. These feathers exhibit a vibrant palette of blues, greens, golds, and bronzes, creating a spectacular visual display during courtship rituals.
On the other hand, the female peahen presents a more subdued appearance. Her feathers are primarily brown, chestnut, or gray, with a bluish ring around the neck, and cream-colored accents. This coloration offers excellent camouflage within her natural environment, helping her to blend seamlessly into the undergrowth while nesting and protecting her eggs and chicks from predators. While the peahen does not possess the same flashy long tail feathers as the peacock, she does have a distinct head crest, which can be made up of blue or green feathers, adding a subtle touch of color to her overall duller plumage.
The difference in plumage between male and female peafowl is a result of sexual selection, with the peacock's extravagant display serving as an indicator of health, vigor, and genetic quality to potential mates. The peahen's more subdued coloration, on the other hand, is crucial for her protective role as a mother, allowing her to carry out her nesting and childcare duties without attracting unwanted attention from predators.
While the dramatic disparity in plumage between adult peafowl is evident, differentiating between young peachicks is more challenging. Peachicks of both sexes are cryptically colored, with similar shades of yellow, tawny, brown, and ivory. It is only after a few months that sex-linked traits begin to emerge, with male peachicks developing longer legs and slightly darker feathers on their chests. However, even at this stage, a definitive determination of sex may require a close examination of the bird's cloaca or laboratory testing of excrement or blood.
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Blood/excrement testing: A close examination of blood or excrement can determine sex
While it is difficult to identify the sex of a peachick, it is possible to do so through blood or excrement testing. These methods are more accurate than physical examinations and can be used to determine the sex of a peachick shortly after birth.
Blood Testing
Blood testing is the only way to determine with certainty the sex of peacock chicks in their first year. It is a worthwhile investment if you need to know the sex of each chick for business or sale reasons. However, it can be expensive and requires a well-trained bird sexer or potentially costly lab tests.
Excrement Testing
Like blood testing, excrement testing can be used to determine the sex of a peachick shortly after birth. This method also requires a well-trained bird sexer or potentially expensive lab tests.
Other Methods
If you are willing to wait a few weeks, the sex of a peachick can be determined through less invasive methods, such as observing the bird's leg length, chest colour, and behaviour in groups. Male peachicks tend to have longer legs than their female counterparts. Male chicks may also show higher signs of aggression.
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