---
title: "What the sources say about the Philippine Tarsier | AnimalTracks.wiki"
description: "49 claims from the Philippine Tarsier profile, each beside the words of the source that backs it."
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---

# What the sources say about the Philippine Tarsier (*Carlito syrichta*)

> 49 claims from the Philippine Tarsier profile, each beside the words of the source that backs it. A "..." marks a cut in a quote and [brackets] an insertion.

Profile: [Philippine Tarsier](https://animaltracks.wiki/animals/philippine-tarsier/)

## Tarsius syrichta (Philippine tarsier). Animal Diversity Web, University of Michigan.

https://animaldiversity.org/accounts/Tarsius_syrichta/

| The page says | The source says |
| :--- | :--- |
| largest eyes for its body of any mammal | In proportion to their body, their eyes are the largest among mammals. |
| a head that turns 180 degrees | Their heads can rotate 180 degrees. |
| legs built for jumping | Tarsiers were named because of the two greatly elongated bones on their feet. These extra bones give tarsiers added leverage for jumping. |
| Hand-sized | They are about the size of a young child's hand. |
| Tropical rainforest with tall grasses, bamboo and small trees, mostly on Samar, Leyte, Bohol, and Mindanao in the Philippines | This species is most commonly found on Samar, Leyte, Bohol, and Mindanao. |
| Tropical rainforest with tall grasses, bamboo and small trees | Philippine tarsiers are found in areas of tall grasses, bushes, bamboo shoots, and small trees in tropical rainforests. |
| Insects, spiders, lizards, and small vertebrates such as birds | They eat insects, spiders, lizards, and small vertebrate animals such as birds. |
| Eyes that are the largest of any mammal for its body size, a head that rotates 180 degrees | In proportion to their body, their eyes are the largest among mammals. ... Their heads can rotate 180 degrees. |
| Its body is roughly 85 to 160 millimeters long, and it weighs between 80 and 165 grams. | Body size is approximately 85 to 160 mm, with weights between 80 and 165 g. |
| It has a tufted tail 25 centimeters long. | They have a 25 cm long tail that is tufted at the end. |
| Its eyes are huge, and its ears are big and bat-like. | Tarsiers have large ears, resembling a bat, and round faces. ... The eyes are huge, and their vision is acute. |
| Sharp sight and hearing together make it a highly successful night hunter. | The tarsier's great hearing, coupled with their amazing sense of sight, make them highly successful nocturnal hunters. |
| A tarsier's head can rotate 180 degrees | Their heads can rotate 180 degrees. |
| Tarsiers were named for two greatly elongated bones in their feet. These long bones give tarsiers added leverage for jumping. | Tarsiers were named because of the two greatly elongated bones on their feet. These extra bones give tarsiers added leverage for jumping. |
| The tarsier does not usually move on all four limbs. It has developed excellent leaping skills | Tarsiers usually do not move using four limbs; rather, they have developed excellent leaping skills. |
| pads on its fingers and toes help it cling to branches | They have pads on their fingers and toes to help them cling to branches. |
| By day it hides in dense vegetation and sleeps in trees. | They spend the day hiding in dense vegetation and sleeping in trees. |
| At night it hunts insects, spiders, lizards and small vertebrates such as birds. | They eat insects, spiders, lizards, and small vertebrate animals such as birds. |
| When it seizes prey, it carries the meal in its mouth and uses both hands. | Upon seizing its prey, a tarsier carries it in its mouth and using both hands. |
| It lives in the rainforests of the Philippines and is most commonly found on Samar, Leyte, Bohol and Mindanao. | is found in the rainforests of the Philippines. This species is most commonly found on Samar, Leyte, Bohol, and Mindanao. |
| Tarsiers appear to have home ranges of 1 to 2 hectares. | Tarsiers appear to have home ranges of 1 to 2 hectares. |
| A single young is born after about six months, well furred and with its eyes open. | Tarsier females bear a single young. The gestation period lasts six months. ... Offspring are born well-furred and with eyes open. |
| It can climb after two days and jump after four | The young tarsiers can climb after two days and jump after four. |
| by about 45 days it can catch its own prey. | Young are able to capture prey by about 45 days of age |
| Wild tarsiers likely do not live as long as captive ones. | It is likely that wild animals do not live as long as their captive counterparts. |
| Hunters and trappers have hurt the species by shaking tarsiers out of their trees or chopping down the branches they live in, and deforestation has hit the species significantly too. | Tarsiers have suffered greatly from hunters and trappers who shake the animals out of their trees or chop down the branches of the trees in which they live. ... Philippine tarsiers are also significantly affected by the increased rate of deforestation |
| Its body is roughly 85 to 160 millimeters long and it weighs 80 to 165 grams, and its tail adds about 25 centimeters. That is about the size of a young child's hand. | Body size is approximately 85 to 160 mm, with weights between 80 and 165 g. They are about the size of a young child's hand. They have a 25 cm long tail that is tufted at the end. |
| Its menu is insects, spiders, lizards, and small vertebrates such as birds. Once it grabs a meal, it carries the prey in its mouth, using both hands. | They eat insects, spiders, lizards, and small vertebrate animals such as birds. Upon seizing its prey, a tarsier carries it in its mouth and using both hands. |
| ADW says it is likely that wild animals do not live as long as their captive counterparts. | It is likely that wild animals do not live as long as their captive counterparts. |
| Imagine a hunter about the size of a young child's hand, working the night shift, with the largest eyes for its body of any mammal. | They are about the size of a young child's hand. ... In proportion to their body, their eyes are the largest among mammals. |
| working the night shift | Tarsiers are arboreal and nocturnal. |
| Named for its feet Tarsiers were named for two greatly elongated bones in their feet. | Tarsiers were named because of the two greatly elongated bones on their feet. |
| A leaper that hunts at night | At night they emerge to move about and hunt for prey. |
| dangerLevel: Low | There is no known negative impact of these animals on humans, so long as the tarsiers are in their native environment. |

## AnAge entry for Carlito syrichta. AnAge: The Animal Ageing and Longevity Database, Human Ageing Genomic Resources.

https://genomics.senescence.info/species/entry.php?species=Carlito_syrichta

| The page says | The source says |
| :--- | :--- |
| AnAge gives a maximum of 16 years, based on a male that reportedly lived more than 10 years in captivity. | Maximum longevity 16 years (captivity) ... One male reportedly lived over 10 years in captivity, making it about 16 years old |
| The record is about 16 years, for a male that reportedly lived over 10 years in captivity. | Maximum longevity 16 years (captivity) ... One male reportedly lived over 10 years in captivity, making it about 16 years old |
| The lifespan figures come from captivity. | Maximum longevity 16 years (captivity) |
| Captive records, wild threats | Maximum longevity 16 years (captivity) |
| weightKg: 0.12 | Adult weight 119.2 g (note: 119.2 g) |

## Shekelle (2020). Carlito syrichta. The IUCN Red List of Threatened Species 2020: e.T21492A17978520.

https://doi.org/10.2305/iucn.uk.2020-3.rlts.t21492a17978520.en

| The page says | The source says |
| :--- | :--- |
| Near Threatened | Near Threatened |
| The IUCN Red List rates the Philippine tarsier Near Threatened. | Near Threatened (note: GBIF copy of the Red List category, checked against taxon id in the DOI; assessed 2015 per the prefetch.) |

## Ramsier et al. (2012). Primate communication in the pure ultrasound. Biology Letters.

https://doi.org/10.1098/rsbl.2011.1149

| The page says | The source says |
| :--- | :--- |
| hearing that reaches about 91 kHz, well into ultrasound | has a high-frequency limit of auditory sensitivity of ca 91 kHz |
| This tarsier may also have a hidden channel. | For Philippine tarsiers, ultrasonic vocalizations might represent a private channel of communication |
| In one study, the Philippine tarsier's hearing reached about 91 kHz, and researchers recorded a call at 70 kHz. | the Philippine tarsier (Tarsius syrichta), has a high-frequency limit of auditory sensitivity of ca 91 kHz. We also recorded a vocalization with a dominant frequency of 70 kHz. |
| Few mammals can send and receive calls in pure ultrasound, above 20 kHz, and these values are among the highest recorded for any land mammal. | Few mammals-cetaceans, domestic cats and select bats and rodents-can send and receive vocal signals contained within the ultrasonic domain, or pure ultrasound (greater than 20 kHz). ... Such values are among the highest recorded for any terrestrial mammal |
| The researchers suggest ultrasonic calls might be a private channel that subverts detection by predators, prey and competitors. | ultrasonic vocalizations might represent a private channel of communication that subverts detection by predators, prey and competitors |
| Researchers found that the Philippine tarsier's hearing reaches about 91 kHz, far above the 20 kHz where ultrasound begins. They also recorded one call at 70 kHz. Those values are among the highest known for any land mammal. | pure ultrasound (greater than 20 kHz). ... has a high-frequency limit of auditory sensitivity of ca 91 kHz. We also recorded a vocalization with a dominant frequency of 70 kHz. Such values are among the highest recorded for any terrestrial mammal |
| hearing that reaches about 91 kHz, well into ultrasound. | has a high-frequency limit of auditory sensitivity of ca 91 kHz |
| In one study the Philippine tarsier heard up to about 91 kHz, and researchers recorded a call with a dominant frequency of 70 kHz | the Philippine tarsier (Tarsius syrichta), has a high-frequency limit of auditory sensitivity of ca 91 kHz. We also recorded a vocalization with a dominant frequency of 70 kHz. (note: vibe.reason) |