The complex geometry of ridges on the inner surface of aye-aye ears helps to sharply focus not only echolocation signals from the tapping of its finger, but also to passively listen for any other sound produced by the prey.

These ridges can be regarded as the acoustic equivalent of a Fresnel lens , and may be seen in a large variety of unrelated animals, such as lesser galago , bat-eared fox , mouse lemur , and others.

The aye-aye is a nocturnal and arboreal animal meaning that it spends most of its life high in the trees. Although they are known to come down to the ground on occasion, aye-ayes sleep, eat, travel and mate in the trees and are most commonly found close to the canopy where there is plenty of cover from the dense foliage.

During the day, aye-ayes sleep in spherical nests in the forks of tree branches that are constructed out of leaves, branches and vines before emerging after dark to begin their hunt for food.

Aye-aye are solitary animals that mark their large home range with scent. The smaller territories of females often overlap those of at least a couple of males.

Male aye-ayes tend to share their territories with other males and are even known to share the same nests although not at the same time , and can seemingly tolerate each other until they hear the call of a female that is looking for a mate.

The aye-aye is an omnivore and commonly eats seeds, fruits, nectar and fungi, but also insect larvae and honey.

Studies have suggested that the acoustic properties associated with the foraging cavity have no effect on excavation behavior.

It climbs trees by making successive vertical leaps, much like a squirrel. Though foraging is usually solitary, they occasionally forage in groups. Individual movements within the group are coordinated using both vocalisations and scent signals.

The aye-aye is classically considered 'solitary' as they have not been observed to groom each other. It usually sticks to foraging in its own personal home range, or territory.

The home ranges of males often overlap, and the males can be very social with each other. Female home ranges never overlap, though a male's home range often overlaps that of several females.

The male aye-ayes live in large areas up to 32 hectares 80 acres , while females have smaller living spaces that goes up to 8. It is difficult for the males to defend a singular female because of the large home range.

They are seen exhibiting polygyny because of this. Like many other prosimians, the female aye-aye is dominant to the male. They are not typically monogamous, and will often challenge each other for mates.

Male aye-ayes are very assertive in this way, and sometimes even pull other males away from a female during mating. Males are normally locked to females during mating in sessions that may last up to an hour.

Outside of mating, males and females interact only occasionally, usually while foraging. The aye-aye lives primarily on the east coast of Madagascar.

Its natural habitat is rainforest or deciduous forest, but many live in cultivated areas due to deforestation. Rainforest aye-ayes, the most common, dwell in canopy areas, and are usually sighted above 70 meters altitude.

They sleep during the day in nests built from interwoven twigs and dead leaves up in the canopy among the vines and branches.

The aye-aye was thought to be extinct in , but was rediscovered in Nine individuals were transported to Nosy Mangabe , an island near Maroantsetra off eastern Madagascar, in However, there is no direct evidence to suggest aye-ayes pose any legitimate threat to crops and therefore are killed based on superstition.

The aye-aye is often viewed as a harbinger of evil and killed on sight. Others believe, if one points its narrowest finger at someone, they are marked for death.

Some say that the appearance of an aye-aye in a village predicts the death of a villager, and the only way to prevent this is to kill it. The Sakalava people go so far as to claim aye-ayes sneak into houses through the thatched roofs and murder the sleeping occupants by using their middle finger to puncture the victim's aorta.

The conservation of this species has been aided by captive breeding, primarily at the Duke Lemur Center in Durham, North Carolina.

This center has been influential in keeping, researching and breeding aye-ayes and other lemurs. They have sent multiple teams to capture lemurs in Madagascar and have since created captive breeding groups for their lemurs.

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From The Album Play album. Instrumentals Lemur listeners. Artist images 5 more. In the wild, infants are weaned as early as 7 months, but they will continue nursing in captivity as long as they remain housed with their mothers; infants might still be nursing even at 1.

In captivity, females give birth every years. At the DLC, a captive born female bred at age 3. Gestation period is around days. The majority of their time is spent in the trees although traveling on the ground is reasonably common.

Males have huge home ranges, between and ha, while the home ranges of females are much smaller, usually between 30 and 50ha.

Female ranges do not overlap with those of other females, but they always overlap that of at least one male.

Aye-ayes sleep in elaborate tree nests during the day, with different animals possibly using the same nest on different days. Wild aye-ayes spend most of their lives alone.

The only social interactions occur during courtship and when an infant is dependent on its mother.

During these interactions, females are considered to be dominant over males, giving them preferential access to food. Female dominance in primates is unique to prosimians.

When aye-ayes get excited or agitated, their long, mostly white guard hairs stand on end and give the poofed-up lemur the appearance of an animal twice its actual size!

What we do know though is such forms of communication are essential for the entire family group.

Even though they are so social at those times, these Lemurs also choose to be isolated. They can spread out greatly as they look for food.

Then they will reconnected later on as a unit. The home ranges of these Lemurs frequently overlap. They can become very aggressive if they know females outside of their family unit have been in the area looking for food.

Only around Madagascar Island will you be able to find the Aye-Aye Lemur in their natural environment. They tend to stick to the Eastern portion of it but they are known to be well scattered throughout the region.

The higher altitude regions seem to be attractive to these Lemurs. They enjoy the safety of the canopy of the leaves that spread out above them.

This gives them the ideal location for creating their nests. Remember that long middle finger I mentioned earlier?

It is amazing how the Aye-Aye Lemur uses it to find food. They will tap on trees up to 8 times per second to find grubs and take them out of the trees.

This is a very common form of eating for them that they are very good at. They spend hours and hours each night eating as much as they can.

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