The southern free-tailed bat is a small nocturnal bat that lives only in Australia. It has a completely free tail that helps it fly quickly and agilely, and it feeds on flying insects.
The southern free-tailed bat differs from related species by its completely free tail, which is not connected to the membrane. It is important for nature because it eats many harmful insects every evening and helps maintain balance in Australian ecosystems.
Immature form that undergoes metamorphosis before adulthood.
Worker
Tail size
birth time
breeding
Dogs, dolphins, lynx hang out for 9-25 years and party on their birthday three times a year
m
Map
will celebrate their {n} birthday
g
t
When your next jubilee falls in {name} life years
Human
echolocation
days
Warm summer
How old you would be if you lived as {name}
Theoretical maximum lifespan estimated from the Dynamic Energy Budget (DEB) mathematical model. This value reflects a biological potential derived from metabolic parameters, not from direct observation — real recorded lifespans are often significantly shorter.
adult
Maturity
About health
When your next birthday would fall if you lived as {name}
Repro interval
results
aerial
summer warm, winter not very cold
Colors
Sex
Upcoming jubilees
Gremllins
mo
rains are very rare, almost a desert
Trophic type
Filters
Tail count
Mediterranean forest
Upcoming birthdays
nest inside a tree trunk or in a cave/crevice
eggs, roe or offspring develop in a nest built on the ground or close to it
Truly long lives: 40-100 years. Bowhead whales, albatrosses, giant tortoises recall their birthday at most once a year
Lifespan
nocturnal butterflies and moths
rains almost always, very humid
young are born live on land, not hatched from eggs or roe
flying insects
in hollows and caves
Age (juvenile)
Age (from birth to death)
Age (embryo)
Wanderers
Age (larva)
Feeding occurs in open air space above ground or water.
Wings size
world of Australasia
Jubilee = every 10th birthday
dry, cold winter, lots of grass, few trees
Warm summer and frequent rains
Ears size
Earliest developmental stage inside an egg or womb.
Business sausages
Lifespan average
in a terrestrial nest
young after fast growth
Juvenile stage following larval metamorphosis but not yet adult.
live birth
summer warm, rains frequent
What do they look like?
Maturity
emergence (insects)
end of lifespan
Wings color
How do they live?
fertilization / egg laying
termites
How do they behave?
birth / hatching
metamorphosis / end of larval stage
end of acceleration
Share
Find a pet...
Mature, fully developed individual capable of reproduction.
Actively hunting and capturing live prey.
flight
Pets
terrestrial shrubland
{name} jubilee
terrestrial shrub habitats — maquis, chaparral, bush
cm
Old-timers
Find an animal or breed...
plains
turns
islands and part of Australia, many unusual animals and plants
Rascals
terrestrial forest
Tail color
Flooded grasslands
Ears count
Litter size
Map data sources: Ecosystem classification — IUCN Global Ecosystem Typology (Keith et al., 2022), indicative distribution maps Keith et al. (2020), https://doi.org/10.5281/zenodo.3546513; Large Marine Ecosystems — NOAA LME Program; Bathymetry — GEBCO Bathymetric Compilation Group (2026), GEBCO_2026 Grid, https://doi.org/10.5285/4f68d5c7-45eb-f999-e063-7086abc036fa; Climate data — Generated using Copernicus Climate Change Service information; Species occurrence data — GBIF.org, Derived dataset "all animals", https://zveriki.com/dataset/dataset.tsv; Terrestrial ecoregions — RESOLVE Ecoregions 2017 (Dinerstein et al., 2017), CC BY 4.0
How to care for them?
Living from 25 to 40 years. Orangutans, bald eagles, African elephants celebrate their birthday twice a year
°C
Not specified
Where are they found?
Species lacks any fixed or lasting shelter structure.
Legendary longevity: over 100 years. Galapagos tortoises, Greenland sharks, ocean quahogs celebrate with family once every 4 years
Offspring
Elders
Bro
Taxons
if born as {name}
moths
beetles
open woodlands
age
birth date
no permanent shelter
rest
Fur color
Close
was
Career from 7 to 15 months. Dwarf hamsters, voles, field crickets celebrate their birthday twice a month
The basics
My weight?
Non-stop carnival: they only live a few days. Mayflies, rotifers, midges celebrate their birthday more than twice a day
primary food sources
Potential Habitat
lots of grass, few trees, rains are rare
Very hot summer
d
In husbandry
On the go from 1.3 to 3.5 years. Forest mice, anoles, rainbow fish party on their birthday once a month
Mass
Mosquitoes, fruit flies, small crustaceans hustle for up to 7 months and throw a birthday party every week
Gestation
islands and part of Australia, many unusual animals and plants
land
summer very hot, above +25…+30 °C
{name} birthday
No results found
On the map
Pleasant summer
all life stages
Female ♀
dry and hot summer, warm and rainy winter
Cold and almost dry
insectivore
termites
Map data sources: Ecosystem classification — IUCN Global Ecosystem Typology (Keith et al., 2022), indicative distribution maps Keith et al. (2020), https://doi.org/10.5281/zenodo.3546513; Large Marine Ecosystems — NOAA LME Program; Bathymetry — GEBCO Bathymetric Compilation Group (2026), GEBCO_2026 Grid, https://doi.org/10.5285/4f68d5c7-45eb-f999-e063-7086abc036fa; Climate data — Generated using Copernicus Climate Change Service information; Species occurrence data — GBIF.org, Derived dataset "all animals", https://zveriki.com/dataset/dataset.tsv; Terrestrial ecoregions — RESOLVE Ecoregions 2017 (Dinerstein et al., 2017), CC BY 4.0
Potential habitat modelled from GBIF occurrence data. Map © Zveriki.com, licensed under CC BY 4.0.
moth flies
birth year
Shelter used specifically for reproduction or nesting.
Maturity
terrestrial habitat, land surface outside water
flying insects
sq mm
yr
comfortable summer, +20…+25 °C
protection from sun
How similar?
Male ♂
until the celebration
baby / chick
age as {name}
How do they breed?
On the go from 3.5 to 6 years. Hedgehogs, crows, lizards treat themselves to birthday snacks 6 times a year
What if eaten?
insects caught in flight — flies, moths, beetles
Very dry
Neither
from birth to adulthood
live beetles — various species
Young offspring still dependent on parental care.
What do they eat?
dry and cold almost all year round
Where do they live?
Immature individual that has not yet reached reproductive maturity.
from birth to death
Ears color
early young
forests on land — tropical, temperate, boreal
water often floods the land, lots of grass
Temperate mixed forest
Duration
This is me
Steppe
Always very wet
Gamers
How are they built?
aerial hunting with echolocation
mm
Theoretical lifespan
ml
Stars
Link copied
My age?
wk
My size?
terrestrial
Asexual
swap
live termites
active predation
Rabbits, falcons, red-eared turtles hang out for 6-9 years and party on their birthday four times a year
Where do they take shelter?
inhabit and develop on land, outside water bodies
celebrated their {n} birthday
When you would have been born if you lived as {name}
Cold steppe
Daddies
Lifespan maximum
world of Australasia
beetles
Capturing or collecting food while airborne.
Hermaphrodite ⚥
Grape
8 to 11 grams, 1.5 – 8 centimeters
embryo
summer warm, many oaks, birches, maples
Length
kg
Observations
◉{N} more on tap