Nepedia
Back to Discover
Advanced Reader
🧬

Grey junglefowl

life science Maturity 5-7 Next article →

The grey junglefowl, known scientifically as Gallus sonneratii, is a wild bird native to India.

Grey Junglefowl by Samad Kottur
Grey Junglefowl by Samad Kottur

It is one of the important wild ancestors of the modern domestic chicken. This species is closely related to the red junglefowl and other junglefowl species. Understanding these birds helps scientists learn how domestic animals were originally formed. The name of the species honors the French explorer Pierre Sonnerat.

Grey jfowl jgould
Grey jfowl jgould

Today, these birds play a role in both nature and human history.

Male grey junglefowls have very distinct physical features. They possess a black cape decorated with ochre spots. Their grey body plumage is covered in fine patterns. The males have red combs and red wattles on their heads. Their legs are also red and feature sharp spurs.

Grey jfowl jgould
Grey jfowl jgould

Interestingly, the neck feathers of males are long and dark. These feathers end in a small, hard, yellowish plate. This unique structure makes them popular for making high-grade artificial flies for fishing. Males also experience an eclipse plumage. During the summer, they moult their colorful neck feathers during or after the breeding season.

Females look very different from the colorful males. They have much duller coloring to help them stay hidden. Their underparts feature black and white streaking. Unlike the males, females have yellow legs. They also usually lack the sharp spurs found on males.

Grey Junglefowl by Samad Kottur
Grey Junglefowl by Samad Kottur

Both sexes use their wings for more than just movement. While they spend most of their time on the forest floor, they will fly into trees. They do this to roost or to escape from predators. This behavior keeps them safe while they rest.

These birds live in specific parts of the Indian Peninsula. Their habitat includes thickets, open scrub, and the forest floor. They are also found in Gujarat, Madhya Pradesh, and southern Rajasthan. In the Aravalli range, they may overlap with the red junglefowl.

Grey Junglefowl by Samad Kottur
Grey Junglefowl by Samad Kottur

Some researchers discuss a specific population from Mount Abu in Rajasthan. This group is called the wangyeli subspecies. It is not always recognized by scientists. However, the males from this area have a different call and paler plumage than birds in southern India.

Grey junglefowls follow specific biological cycles. They breed between the months of February and May. During this time, they lay between 4 and 7 pale, creamy eggs. These eggs are laid in a simple scrape on the ground. The eggs take about 21 days to hatch.

Grey Junglefowl by Samad Kottur
Grey Junglefowl by Samad Kottur

For food, they forage in small groups. These groups may be mixed or made of only one sex. They eat a variety of items, including berries, insects, and termites. They also consume grains and bamboo seeds.

Science shows a deep connection between this wild bird and domestic chickens. For example, a single gene from the grey junglefowl causes the yellow pigment in the legs of many domestic breeds.

Grey Junglefowl by Samad Kottur
Grey Junglefowl by Samad Kottur

Researchers have found multiple genomic regions from the grey junglefowl inside the domestic chicken genome. This process is called introgression. In the wild, the grey junglefowl sometimes hybridizes with the red junglefowl. They also hybridize easily in captivity or near human habitations. This mixing of genes shows how closely these different bird groups are linked.

Evolutionary studies help us see when these birds split into different species. The grey junglefowl and red junglefowl diverged about 2.6 million years ago.

Grey Junglefowl by Samad Kottur
Grey Junglefowl by Samad Kottur

Some phylogenetic studies suggest the grey junglefowl is actually more closely related to the Sri Lankan junglefowl. The split between those two happened about 1.8 million years ago. This more recent divergence supports a sister relationship between them. Scientists also found an endogenous retroviral DNA sequence in their genome. This DNA is also found in domestic chickens and shows how an ancient virus integrated into the Gallus genome.

610 words

Where will your curiosity go next?

Keep exploring at your chosen reading level.

🖼️ Images & Media (2)
File:Grey jfowl jgould.jpg
Grey jfowl jgould.jpg
File:Grey Junglefowl by Samad Kottur.jpg
Grey Junglefowl by Samad Kottur.jpg
More to explore

🔬 Go deeper

More advanced topics to explore

🪜 Step back

Simpler topics to build understanding

What is Nepedia?

A free, ad-free encyclopedia for children. Every article is written at five reading levels, so the same page works for a five-year-old and a fifteen-year-old — use the level switcher above to see this one change. No account needed to read.