Indian blue peafowl do not migrate or travel widely. They are most common in deciduous, open forest habitats. In one study in Dak Lak, Vietnam, green peafowl preferred dry deciduous forest over mixed and evergreen forest. Areas that had sufficient water sources and were relatively distant from any human presence were also preferred if given the choice. Their basic requirements include a suitable roost tree, a small territory, and sufficient food. In their native range, peafowl are only found from 900 to 1200 m above sea level in areas with appropriate forest habitat to support them. Peafowl are able to adapt to much colder climates than their native range. In captivity, they can survive winters in southern Britain with only a simple shelter. However, in areas that are both damp and cold, peafowl do not fare as well. They are often kept in urban gardens and zoos. (Brickle, 2002; Jackson, 2006)
Indian blue peafowl are known best for their exquisite train and plumage. If the length of the tail and wing span is included, the peafowl is considered one of the largest flying birds. They weigh in between 2.7-6 kg and have a wingspan of 1.4-1.6 m. They vary widely in length from 0.86-2.12 m. This species has long, strong, grayish-brown legs equipped for running away into brush for safety. Both sexes are equipped with spurs that are around 2.5 cm long; males will use them during the breeding season to ward off other competing males. Females are brown, grey, and cream-colored. Chicks are usually a light yellow to brown color. The males have a long train, about 1.2 m in length on average, from June to December. The train is discarded in January, but is grown again at a rapid pace when breeding season approaches. Their necks and breasts are a bright blue, golden feathers line their sides and backs, and their trains are an iridescent arrangement of multiple colors featuring ocelli (eye-spots). When displayed, the male’s train spreads out in a wide fan, showing off gold, brown, green, and black feathers. Around 30 to 40 of the ocelli around the outer edges of the fan are not round but v-shaped. This complicated pattern is thought to be an advantage in mating, and even though it might seem like this bright pattern would make peafowl stand out, they can very easily disappear into foliage, making it extremely hard to spot.
There are three variations in the Indian blue peafowl. The white feathered peafowl has completely white feathers from the top of its head to the end of its train, with the ocelli barely visible. These are not albinos because they are true breeders (when bred with another white feathered peafowl, all their offspring will be white feathered peafowl as well) and have brown eyes. In another version known as pied, random white feathers appear in the plumage. This results from an incomplete dominant gene. Due to a different mutation, another variation results in dark feathers with blue and green tips, called the black-winged peafowl. In addition, Pavo muticus. For the past two decades, a new mutation in the plumage has been discovered almost every year. (Jackson, 2006; Somes and Burger, 1993)can hybridize with the green peafowl,
There is a significant positive correlation between a peafowl’s train and its mating success. This correlation is due to female’s preference for more elaborate trains on their mates. Males spend a great deal of energy to produce and maintain good tail conditions, resulting in a trade-off between a longer train and avoiding predators or searching for food. Mating success is usually more successful for the males with the highest number of eyespots (also called ocelli) on their train. If eyespots were experimentally removed from a male’s train below the the range of other individuals eyespot numbers, mating success decreased significantly. There is also a positive correlation between the number of eyespots, the amount of time a male displays to a female during the breeding season, and the overall health of the individual. A peacock that displays less often and has less eyespots has more heterophils circulating in its body, indicating the peacock is spending more energy to fight off an infection than a male that displays more often with more eyespots. Peahens choose the peacocks with the most eyespots because her chicks will hopefully inherit the male’s superior immune system and have a greater chance at survival.
However, females rely on more than one trait when picking a male. Feather ornaments, such as length and number of eyespots during breeding season, is a fixed characteristic based on genetics and can reflect their past condition such as attacks or illnesses. Behavioral displays are flexible characteristics that can change day to day, mate to mate, and improve with experience. For example, peacocks use the sun at different angles when performing visual displays such as “train-rattling” or “wing-shaking”. Visual genetic traits and behavior of the male allow the peahen to determine the health of a mate and the benefits it would confer to their offspring.
Peahens are also very aggressive when it comes to finding a suitable partner. The bigger and stronger females will fight away other females and try to monopolize the male by repeatedly mating with him. Favored males tend to mate with more females and the same female more than once, increasing their fitness significantly. On average, males usually mate with up to six different peahens every breeding season. Because the male only contributes its sperm, females must pick the best possible choice and try to limit the access of other females to increase their own offspring’s survival rates. (Dakin, 2008; Loyau, et al., 2005; Petrie and Halliday, 1994; Petrie, et al., 1992; Walther and Clayton, 2005)
This species becomes sexually mature at three years, though some males can breed at age 2. Females will lay 3-5 brownish oval eggs, but in some cases have laid up to 12. The eggs are laid one at a time every other day. Their glossy shells have deep, small pores that let in water to keep it moist. The incubation period lasts up to 28 days.
The nest is made up of dry sticks and leaves, and is located on the ground, under shrubs. Naturally, a peahen will only lay one clutch per breeding season. If raised in captivity and a clutch is taken away from the female, she will mate again and can lay up to three clutches in a breeding season. The clutches removed from the mother can be given to a foster parent such as a turkey hen.
Chicks are mobile and fully feathered at hatching, can fly in about one week, and rely on their mother for only an additional few weeks. Although the chicks are fairly resilient, they do need relatively warm temperatures to survive and can die in colder climates. Some aviculturists have avoided this problem by raising eggs in incubators. Peachicks must be taught to eat and drink through imitation. Males and females look alike until the males develop their train and bright feathers. It takes up to three years for males to develop a full train. It is almost impossible to tell the difference until a couple of months after hatching in which the males have longer legs. Also, the males will have light gray outer primary feathers and their female counterparts will be brown. (Jackson, 2006)
Only the females are involved in the incubating of the eggs and the rearing of the chicks. Chicks are mobile and fully feathered at hatching, can fly in about one week, and rely on their mother for only an additional few weeks. If the female mates with a favored male, they usually have larger eggs with a higher amount of testosterone deposited in the yolk. Chicks of males who have the largest or most eye-spots tend to grow faster and have a better survival rate. (Loyau, et al., 2007; Petrie and Williams, 1993)
Indian blue peafowl prefer a mostly solitary and isolated lifestyle. During the breeding season, a male will defend its territory and females will seek them out as mates. A single male can have a harem of six females. Outside of the breeding season, females live alone or with other females in groups of 2 or 3. Males also can live in small groups with other males or alone. This species is very cautious and always alert to spot any potential danger. Its head is always moving about, searching its surroundings for any predators. Unlike Congo peacocks (Afropavo congensis), or green peacocks (Pavo muticus), is less affected by the presence of humans, making it much easier for aviculturists to raise this species. Indian blue peafowl are diurnal, seeking protection high up in trees when it sleeps. only flies to the lowest branch, and then works its way up branch by branch until it has reached a safe height. This can sometimes be a very obvious roosting place, but it is very effective for avoiding its natural predators.
Indian blue peafowl require a lot of water to drink, but will not bathe in water because it weighs down their feathers. If their feathers do get wet, they wait in a safe location until they are dry. Instead of water baths, they take dust baths which help to get rid of any parasites or bugs. Peafowl spend a lot of time preening their feathers, especially the males whose mating success is very reliant on their displays.
Males will tend not to display when high winds make it too difficult to maintain their balance. However, their trains can be used for other purposes. Males will display as an intimidating factor against other males or other aggressive species. When fighting another male, the bird will leap up in the air and slash down at the defending male with their spurs. If they are attacked, they run away into dense undergrowth. Their coloring makes it almost impossible to spot once hidden away in shrubbery. Even a group of fifteen peafowl can vanish in seconds into shady foliage. If cover is not available and they are forced to take flight, they do not fly very fast or very far. (Jackson, 2006)
Males defend their territory during the breeding season, attacking competing males with their spurs. During the non-breeding months, the males are less agressive towards other males, but will attack other animals (such as humans) if they feel threatened. Owners of these exotic birds put Indian blue peafowl in pens with their chickens or turkeys because they intimidate potential predators that roam onto their territory. (Jackson, 2006)
The calls of Indian blue peafowl are extremely loud and are often described as unpleasant, harsh shrieking. These calls are extremely varied, with up to six alarm calls issued by both sexes and seven additional calls that males emit during territorial disputes. Three of the calls the males produce are only associated with reproduction, and are typically only used during breeding season. These calls are only created by sexually-mature males, and can affect mating success. The calls mostly differ in pitch and the number of notes. These calls could be more important than the actual visual display of the males trains in which even the most elaborate can have varying rates of mating success. Vocal calls with more than five notes are generally more successful and it is believed that these types of calls are sexually selected by the females. Also, when predators, humans, or any other type of disturbance agitates a peafowl, they can issue an alarm call. The type of alarm call emitted depends on the threat. However, no matter how great the level of alarm, peafowls of any age and gender call back to increase awareness among the group. If the call indicates great danger, the peafowls will relocate to a safer position.
The elaborate ornamentation of male plumage is an important visual cue that communicates fitness to potential mates. Indian blue peafowl perceive their environment through visual, auditory, tactile, and chemical stimuli. (Takahashi and Hasegawa, 2008)
Indian blue peafowl are omnivorous. They consume insects, worms, lizards, frogs, and snakes. Termites are their food of choice. This species name in Sanskirt means “killer of snakes” because they eat young cobras (Ophiophagus Hannah), making them invaluable and often revered. They also feed on tree and flower buds, petals, grain, and grass and bamboo shoots. In order to help with the breakdown of their food, peafowl will ingest pebbles which are stored in their gizzard and help grind up grains. It is also reliant on an abundance of water for survival. (Jackson, 2006)
The natural enemies of Indian blue peafowl are large cats like civets (Civettictis civetta), tigers (Panthera tigris), and leopards (Panthera pardus). Wild dogs like dholes (Cuon alpines) and jackals (Canis aureus) are also considered to be main predators. Because peafowl are so effective at running away and disappearing into shrubbery, predators usually take the birds down in a surprise attack.
The male train can contribute to a higher predation rate on this species. When they are drinking or displaying, the train obstructs their view of potential predators stalking them from behind. Predators can also snatch a male's train if they are roosting too low. For example, tigers can stretch up to three meters and male peacocks can have trains over a meter long therefore it’s crucial for the peacock to be up at least five meters from the ground in order to be secure. Peafowl can use the spurs on their legs to defend themselves, but do not easily deter predators. However, humans have done the most damage to peacock populations and are considered to be the greatest enemy. Humans have been destroying their natural range, reducing their habitat, hunting them for sport, and eating them and their eggs. (Jackson, 2006)
Indian blue peafowl help regulate the numbers of venomous snakes, abundant lizards, and insects to maintain a stable ecosystem. Peafowl are a carrier of lice and microorganisms. In one study, Goniodes pavonis and Amyrisdea minuta. Because males and females only come together to mate and there is no parental care by the father, louse distribution is largely continued from the mother to the offspring. The father can still pass on the lice secondarily by infecting the mother, who then passes the lice to the peachicks. Females avoid this situation by picking the favored males because those mates most likely have the best parasite resistance and are less likely to pass on any parasites during copulation. In another study of captive peafowl at three different zoos, scientists tested the birds for the presence of harmful microorganisms. All three zoos had peafowl that carried Bordetella avium, Mycoplasma synoviae, Clostridium perfringens, and Escherichia coli. Bordetella avium and Mycoplasma synoviae are contagious and can be passed on to other species, but do not result in high mortality rates. Clostridium perfringens is a helpful bacteria for the digestive system of birds and is opportunistic, only becoming harmful under certain circumstances (like if the immune system is compromised by some other illness). (Hollamby, et al., 2003; Jackson, 2006; Moller, et al., 1999; Stewart, et al., 1996)was found to be a host for two louse species,
Vipera russelii, common cobras Naja naja, and Malabar pit vipers Trimeresurus malabaricus. The extract is high in iron, protein, and steroids, and acts as an inhibitor to harmful enzymes in the venom that cause tissue damage. This is a traditional treatment in India for those who live far away from hospitals and doctors.feather extract in the form of water or ash can be used to treat the poisonous bites of Russell vipers
Not only can the feathers be used for medical purposes, but can be used for decoration. Feathers were used to embellish helmets and hats during the Middle Ages, and more recently are used in flower arrangements. The feathers were used to fletch arrows and were woven into clothes. Over one hundred feathers can be collected from a single peacock when it molts, a collection method that does not harm the birds.
Their eggs are a profitable source of income in areas where they are not revered and protected through religion. Because of their extravagant trains, peacocks have been depicted in art and literature throughout the ages. In Hindu and Buddhist religions, (Jackson, 2006; Murari, et al., 2005)is considered a vehicle for the gods. Religion is not the only reason Indian blue peafowl are respected and loved. They also kill deadly snakes such as cobras, and consumes a large number of insects reducing the amount of pesticides used on crops.
In areas where Indian blue peafowl have been introduced and allowed to roam free, it has the potential to disrupt the ecosystem if it feeds on endangered lizards, for example. This could result in irreversible and expensive damage. A high density of peafowl can easily cause destruction to farmers’ crops or flowerbeds. In some residential communities, this species can be a nuisance because of its frequent screeching. (Jackson, 2006)
Because this species is so thoroughly woven into many cultures, they face little threat of becoming endangered. However, because the human population is growing so quickly, peafowl face the loss of natural habitat and access to water sources. National parks are working to protect the habitats in India and nearby countries considered native to peafowl. Because Indian blue peafowl are so adaptable, it has been introduced to different countries to extend its range. There are also a large number of aviculturalists who raise and breed this species as pets. (Brickle, 2002; Jackson, 2006)
Erin Fowler (author), Radford University, Karen Powers (editor), Radford University, Tanya Dewey (editor), University of Michigan-Ann Arbor, Rachelle Sterling (editor), Special Projects.
Living in Australia, New Zealand, Tasmania, New Guinea and associated islands.
living in sub-Saharan Africa (south of 30 degrees north) and Madagascar.
living in the Nearctic biogeographic province, the northern part of the New World. This includes Greenland, the Canadian Arctic islands, and all of the North American as far south as the highlands of central Mexico.
living in the southern part of the New World. In other words, Central and South America.
living in the northern part of the Old World. In otherwords, Europe and Asia and northern Africa.
uses sound to communicate
Referring to an animal that lives in trees; tree-climbing.
having body symmetry such that the animal can be divided in one plane into two mirror-image halves. Animals with bilateral symmetry have dorsal and ventral sides, as well as anterior and posterior ends. Synapomorphy of the Bilateria.
uses smells or other chemicals to communicate
having markings, coloration, shapes, or other features that cause an animal to be camouflaged in its natural environment; being difficult to see or otherwise detect.
a substance used for the diagnosis, cure, mitigation, treatment, or prevention of disease
animals that use metabolically generated heat to regulate body temperature independently of ambient temperature. Endothermy is a synapomorphy of the Mammalia, although it may have arisen in a (now extinct) synapsid ancestor; the fossil record does not distinguish these possibilities. Convergent in birds.
parental care is carried out by females
A substance that provides both nutrients and energy to a living thing.
forest biomes are dominated by trees, otherwise forest biomes can vary widely in amount of precipitation and seasonality.
referring to animal species that have been transported to and established populations in regions outside of their natural range, usually through human action.