The Mascarene coot was a large bird from the rail family that could not fly at all. It lived only on the islands of Mauritius and Réunion in the Indian Ocean and went extinct more than three hundred years ago due to hunting and introduced animals.
The Mascarene coot differed from ordinary coots in its strongly reduced wings and larger body. It shows how quickly birds change on islands without predators. The species completely disappeared due to humans, but helps scientists understand how important it is to protect island animals.
Near-shore terrestrial and marine zones influenced by the sea.
Immature form that undergoes metamorphosis before adulthood.
pecking
Worker
alpine grassland
birth time
Submerges underwater to reach prey or food at depth.
woodland
bottom
Wetland with standing or slow-moving water and abundant vegetation.
Picking small food items from foliage, ground, or other surfaces.
prairie
humid
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
wetland
g
t
When your next jubilee falls in {name} life years
Human
hot Africa south of the desert, many savannas and forests
Legs count
High-elevation terrain above lowland zones, often cooler and wind-exposed.
very hot and very humid all year round, rain almost every day
very cold, short summer, almost no trees, lots of moss
days
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.
beak
adult
Maturity
polar tundra
marine
plant
montane
Melon
About health
alpine
When your next birthday would fall if you lived as {name}
tropical forest
island
results
marshes
Colors
Sex
cloud forest edge
Upcoming jubilees
marsh
Gremllins
diving
mo
warm temperate humid and hot
pelagic
alpine shrubland
coastal wetland
Trophic type
Filters
Dynamic interface between land and sea including shore habitats.
Captures or processes food by biting or nipping with the mouth.
Extensive wetland areas of saturated ground supporting emergent vegetation.
arid steppe cold
Vast, open saltwater expanses beyond the continental shelf.
Upcoming birthdays
Breeding structure built or used for laying eggs and raising offspring.
boreal
wetlands
Isolated land surrounded by water, often hosting unique or endemic species.
Open, low-growing shrub habitat on poor soils, home to reptiles, birds, and small mammals.
Truly long lives: 40-100 years. Bowhead whales, albatrosses, giant tortoises recall their birthday at most once a year
Lifespan
Non-saline aquatic environments such as rivers and lakes.
swamp
leaf
Height
Open plains dominated by grasses with few trees, supporting grazing and ground-nesting species.
farmland
grassland
Age (from birth to death)
Rock-strewn scrub vegetation supporting drought-tolerant and ground-dwelling animals.
Foraging occurs on the floor of aquatic or terrestrial habitats.
Wanderers
Food items are collected from exposed outer surfaces of substrates.
ocean
algae
Wings size
warm temperate
Wetland with waterlogged soil, dominated by grasses and reeds.
Jubilee = every 10th birthday
scrub
forest
Stunted, wind-sculpted montane woodland at high elevations.
small invertebrates without further specification
Tundra
Earliest developmental stage inside an egg or womb.
Business sausages
wetland
Lifespan average
lakes
leaves
mountain
paramo
coastal dune
What do they look like?
Maturity
emergence (insects)
end of lifespan
Wings color
How do they live?
fertilization / egg laying
How do they behave?
birth / hatching
Broad regions of marshes, swamps, and shallow waters.
metamorphosis / end of larval stage
end of acceleration
Share
arid steppe hot
Find a pet...
Mature, fully developed individual capable of reproduction.
Human-built environments within towns and cities.
Tidal wetland with salt-tolerant grasses and herbs periodically flooded by seawater.
gleaning
Actively hunting and capturing live prey.
Pets
humid forest
snow humid cool
Woodlands growing on lowlands directly adjacent to the sea.
deciduous forest
Transitional zone between closed forest and open land.
Repeatedly strikes or probes substrate with beak to obtain food.
Mangrove thickets
mixed forest
biting
coastal forest
Open terrain dominated by grasses with few trees.
Cool, humid forest occurring on mountain slopes at mid to high elevations.
Feeding occurs primarily on land or in vegetation.
Flowing freshwater channel within a defined bed.
Legs size
{name} jubilee
cm
Old-timers
Find an animal or breed...
Wingspan
Tidal marshes, mangroves and estuaries providing habitat for waterbirds and amphibians.
Low, dense shrub vegetation in semi-arid or coastal zones with few tall trees.
turns
Rascals
cloud forest
warm swampy sea shores, trees on roots
Human-maintained planted spaces around dwellings.
insect
hot Africa south of the desert, many savannas and forests
elfin forest
Litter size
intertidal
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
temperate forest
How to care for them?
desert
Living from 25 to 40 years. Orangutans, bald eagles, African elephants celebrate their birthday twice a year
grazing
coniferous forest
°C
Not specified
Seasonally dry tropical forest with heavy monsoon rainfall periods.
Actively searching habitats to locate food items.
tropical moist forest
warm temperate humid cool
Where are they found?
from 0.8 to 1.2 kilograms, 0.6 – 1.2 meters
steppe
High-elevation zones above treeline with cold, rocky terrain.
herbivore
Open ocean and sea habitats supporting pelagic and deep-water species.
urban
beach
Down color
Feeds by cropping or nibbling low-growing vegetation or algae.
alpine meadow
Locomotion through water employed while searching for or capturing prey.
Legendary longevity: over 100 years. Galapagos tortoises, Greenland sharks, ocean quahogs celebrate with family once every 4 years
Offspring
Elders
small invertebrates
Bro
rocky
Taxons
Temperate sea
food collection with beak in shallow water and plant nibbling
if born as {name}
mountain forest
riverine forest
Foraging takes place among trees and woody vegetation.
Dark underground chambers used by troglophilic species.
Wings count
age
Forest vegetation covering mountain slopes, varying with altitude.
birth date
swimming
coastal
montane grassland
riverine
tearing
Close
was
Career from 7 to 15 months. Dwarf hamsters, voles, field crickets celebrate their birthday twice a month
Scattered trees with grassy understory and ample light.
The basics
rocky shrubland
climbing
Dense tree cover forming a closed canopy habitat.
My weight?
Non-stop carnival: they only live a few days. Mayflies, rotifers, midges celebrate their birthday more than twice a day
surface
primary food sources
arid steppe
Beak size
Potential Habitat
lake
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
Feeding occurs in water bodies such as rivers, lakes, or oceans.
cave
Mass
young shoots and leaves of plants
Mosquitoes, fruit flies, small crustaceans hustle for up to 7 months and throw a birthday party every week
scrubland
terrestrial
Cultivated fields and pastures shaped by agriculture.
subtropical forest
Rips or shreds food using teeth, beak or claws.
aquatic
water is cool or warm, cold in winter, you can swim in summer
{name} birthday
Open landscape dominated by shrubs and low woody vegetation.
Wind-formed sand ridges stabilized by vegetation along shores.
Food is gathered directly from leaf surfaces.
No results found
polar
montane shrubland
On the map
Large inland standing freshwater body supporting diverse aquatic and shoreline species.
all life stages
Female ♀
river
tropical dry forest
world of Afrotropics
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.
Areas along flowing freshwater rivers supporting specialized aquatic and riparian species.
warm temperate humid
Beak count
dry forest
birth year
Maturity
woodlands
salt marsh
sq mm
yr
Beak color
How similar?
water is almost always cold, there may be ice in winter, not hot in summer
Male ♂
until the celebration
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
Open landscape of scattered shrubs and grasses typical of Mediterranean or arid climates.
high grassland
Legs color
What if eaten?
Neither
Moving up vertical surfaces like trunks or rocks to reach food.
from birth to adulthood
Open-water column away from shore and bottom.
Mixed tree cover with moderate canopy and understory, supporting diverse woodland fauna.
nest
What do they eat?
Where do they live?
Immature individual that has not yet reached reproductive maturity.
warm and hot
Land saturated with water supporting aquatic plants.
early young
Plumage color
boreal forest
world of Afrotropics
savanna
heathland
arid woodland
Duration
Wooded corridors lining rivers with dense vegetation sustained by seasonal flooding.
Always hot and wet
This is me
Gamers
aquatic plants and algae
How are they built?
coast
mm
Theoretical lifespan
arid
ml
Stars
Link copied
My age?
wk
My size?
highland grassland
freshwater
open woodland
montane forest
Asexual
swap
Terrain dominated by exposed rock supporting species adapted to hard, uneven surfaces.
Sandy or pebbly shorelines exposed to tides and waves.
active predation
Mangrove forest
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?
Denotes a grassland or steppe habitat preference.
Shore zone exposed between high and low tides, inhabited by hardy marine life.
rainforest
celebrated their {n} birthday
Steep, elevated landforms rising significantly above surrounding terrain.
monsoon forest
When you would have been born if you lived as {name}
garden
Daddies
equatorial humid
Lifespan maximum
Multiple standing freshwater bodies offering varied habitats for fish, birds, and amphibians.
foraging
Hermaphrodite ⚥
shrubland
taiga
Cold sea
tropical rainforest
embryo
Hard, projecting mouthpart used to probe, pluck, or crack food.
warm swampy shores with trees on roots, crabs live there
Extensive tree-dominated landscapes with varied canopy layers and woodland wildlife.
grasslands
Length
kg
arboreal
forest edge
Observations
◉{N} more on tap