1. Why the Red Junglefowl Flies Up to Tree Branches at Dusk
In the forest at dusk, the Red Junglefowl flies from the ground up to tree branches. Usually, this bird usually searches for food on the ground. However, it uses flight primarily when it needs to reach a high roost where ground predators cannot reach, or when escaping danger [3]. Flying is not their main way of moving around during the day; it is a method for staying safe at night.
A study in a national park in Pakistan found that these birds prefer old trees for their roosts. They spend the night in small groups of about 4 to 8 birds [4]. Because this data comes from one specific region, we cannot assume this behavior is exactly the same everywhere. But it suggests that finding a safe spot in the trees is a way for them to spend the night safely.
Reports indicate that the flight of these birds is almost limited to two cases: going up to high roosts at sunset to avoid ground predators, and escaping danger. For a bird that feeds on the ground, flying is an action for surviving the night, not for daytime travel [3].
2. How Red Junglefowl Live in Small Groups and Stay Active at Dawn and Dusk
The Red Junglefowl lives in small groups of a few birds in forests near human settlements. They are known to be active and feed mainly in the early morning and before sunset [1]. During the middle of the day, they do not move around much. The group usually consists of one to a few males and several females. There is a hierarchy, or ranking, among the males [3].
During the breeding season, males are described as making calls, similar to those used when finding food, to attract females [3]. The eggs hatch in about 21 days. The chicks are able to fly when they are 4 to 5 weeks old [3].
3. What the Red Junglefowl Eats: Fruit, Seeds, and Insects
Adult Red Junglefowl eat more plant matter than insects. Their diet includes fallen fruit, seeds, grass, and roots. Chicks, however, eat mostly insects and earthworms [3]. They are also known to eat rice grains [6].
The body size of this bird, which lives in the forests of Southeast Asia, is just under 1 kg (about 2.2 lbs). This is small compared to modern chickens. In fact, the earliest domestic chickens are thought to have been about the same size as today’s Red Junglefowl [2]. The total length of the bird is about 45 cm (about 18 inches), and they are widely distributed from India to Southeast Asia [1]. It is interesting to consider how a small bird that eats grains became involved in human life.
4. Did Crops Attract Red Junglefowl to Live Near Humans?
Archaeological research suggests a reason why forest birds came to live near people. The cultivation and storage of rice and other grains may have attracted the Red Junglefowl, which lives in trees, into human living areas [6]. Specifically, fields, fallow land, leftover grain heads after harvest, and insects gathering around livestock could have drawn these birds to settlements looking for food [6].
This idea makes sense because, as we saw in the previous section, adult birds eat plant matter and chicks eat insects. However, this is still at the stage of "suggestion" or "possibility." It is not a confirmed fact. We still need to ask: when and where did this actually begin?
5. Why Genes and Bones Suggest Different Start Dates for Chickens
Genome analysis indicates that chickens first originated from a subspecies of the Red Junglefowl that lives in southwest China, northern Thailand, and Myanmar. This lineage is estimated to have separated from others about 9,500 years ago. However, this date does not directly show when domestication began [5].
On the other hand, the oldest confirmed domestic chicken bones were found at a site in central Thailand. These bones date to about 1650 to 1250 BCE, or roughly 3,500 years ago. Research also explains that chickens were likely not domesticated in the Indian subcontinent [6].
Furthermore, after chickens became domesticated, they mated with other subspecies and other junglefowl species in various regions. This means their ancestors are not just one subspecies, but a mix [5]. The gap between the dates from genetic analysis and the dates from bones has not been fully explained yet.
6. How Chickens Spread Across the World and Reached Japan in the Yayoi Period
Domestic chickens were carried west from Southeast Asia. They are said to have reached central China, South Asia, and Mesopotamia in the latter half of the 2nd millennium BCE. They arrived in Ethiopia and Mediterranean Europe around 800 BCE [6]. By about 3,000 years ago, they were also used in Europe and Oceania. However, it is not well understood why they spread so widely [2].
In Japan, chicken chick bones found at the Karako-Kagi site in Nara Prefecture are considered the oldest chick bones in Japan. Mass spectrometry of the collagen in the bones confirmed they were chicken bones. The date is the 3rd to 4th century BCE, which is the beginning of the middle Yayoi period. It is estimated that breeding to connect generations was happening at least here [2]. This study does not state that chickens were kept in all settlements across Japan.
7. How Many Eggs Does a Wild Red Junglefowl Lay Compared to a 10-Egg Carton?
A 10-egg carton in your refrigerator is a good measuring tool. In the example from Hokkaido University, a Red Junglefowl lays 4 to 8 eggs per year, though counting methods vary by source [2]. This number is only 40 to 80 percent of a carton. It is a number that cannot fill one carton even in a full year.
Around your home, you might watch to see if birds gather in trees in the evening. Even if you see them, it may not be for the same reason as the Red Junglefowl. But your way of looking at birds in the evening might change a little. If you want to know more, the Hokkaido University announcement is available in Japanese. You can explore the sources listed to find out more about specific places.