The Javan marabou is a large marsh bird from the stork family. It has a bare head and neck, a large strong beak, and long legs for walking in shallow water.
Grabs prey with a large beak while standing in the water or slowly walking.
Worker
birth time
vertebrates
Hot winter with almost no precipitation
Picking small food items from foliage, ground, or other surfaces.
live adult frogs and toads
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
shallow coastal zones of rivers and lakes
g
t
When your next jubilee falls in {name} life years
Human
very hot and very humid all year round, rain almost every day
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.
beak
adult
Maturity
Handbag
invertebrates
About health
from 1.2 to 4.8 kilograms, 0.7 – 1.4 meters
When your next birthday would fall if you lived as {name}
carrion
Repro interval
results
summer warm, winter not very cold
Southeast Asia and islands, always hot and humid
Colors
Sex
Upcoming jubilees
scavenging, eat already dead animals
Gremllins
mo
hot, rains in summer, little precipitation in winter
live fish
little precipitation in winter, more in summer
walking
all seas and oceans
Trophic type
all living animals without backbone
Filters
always hot and humid, huge trees and vines
Upcoming birthdays
standing fresh waters — lakes, ponds, oxbow lakes
Breeding structure built or used for laying eggs and raising offspring.
Truly long lives: 40-100 years. Bowhead whales, albatrosses, giant tortoises recall their birthday at most once a year
Lifespan
Height
rains almost always, very humid
Age (juvenile)
Age (from birth to death)
Hot, little precipitation in winter
Age (embryo)
most of Europe and Asia, various forests, steppes and tundra
Wanderers
Wings size
Jubilee = every 10th birthday
Earliest developmental stage inside an egg or womb.
animals with backbone
Business sausages
Lifespan average
young after fast growth
Juvenile stage following larval metamorphosis but not yet adult.
What do they look like?
Maturity
emergence (insects)
end of lifespan
Wings color
hot, there is a dry season, trees shed their leaves
How do they live?
fertilization / egg laying
How do they behave?
birth / hatching
metamorphosis / end of larval stage
fish
end of acceleration
Share
swampy freshwater biotopes — peat bogs, marshes, river mangroves
Find a pet...
Mature, fully developed individual capable of reproduction.
hot, uneven rains, lots of grass and trees
gleaning
Actively hunting and capturing live prey.
where the river flows into the sea, slightly salty water, lots of fish and birds
Pets
Indomalayan realm
Indomalayan realm
Tropical dry broadleaf forest
Feeding occurs primarily on land or in vegetation.
Legs size
{name} jubilee
cm
Old-timers
Find an animal or breed...
Wingspan
turns
Rascals
warm swampy sea shores, trees on roots
Flooded grasslands
hot Africa south of the desert, many savannas and forests
Litter size
Tropical savanna
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
Actively searching habitats to locate food items.
Where are they found?
all rivers and lakes
Low precipitation in winter
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
Tropical moist forest
Elders
Bro
lakes and ponds
freshwater marsh and wetlands
live snakes
Taxons
carnivore
if born as {name}
age
birth date
small mammals — mice, shrews, bats
Palearctic realm
swimming
Grabs prey with a large beak while standing in the water or slowly walking.
freshwater coastal and creek
Close
Egg shell color
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
Beak size
Potential Habitat
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
Feeding occurs in water bodies such as rivers, lakes, or oceans.
Mass
Mosquitoes, fruit flies, small crustaceans hustle for up to 7 months and throw a birthday party every week
terrestrial
winter dry and very warm
Gestation
aquatic
small mammals
snakes
summer very hot, above +25…+30 °C
{name} birthday
Always hot
No results found
On the map
lunge
all life stages
Female ♀
Down feathers color
high-mountain tundra above the tree line
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.
birth year
Maturity
sq mm
yr
Beak color
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
Legs color
What if eaten?
Neither
from birth to adulthood
Young offspring still dependent on parental care.
nest
What do they eat?
Where do they live?
Immature individual that has not yet reached reproductive maturity.
Marine world
from birth to death
highland tundra
Plumage color
water often floods the land, lots of grass
world of Afrotropics
River estuary into the sea
Freshwater
Head and neck color
Duration
Always hot and wet
This is me
imago — adult insects
freshwater
Always very wet
Gamers
How are they built?
shallow near the shore, water rises and falls, crabs live here
frogs and toads
mm
Theoretical lifespan
ml
Stars
Link copied
My age?
wk
My size?
Asexual
swap
freshwater environment — rivers, lakes, ponds, swamps
Southeast Asia and islands, always hot and humid
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?
Warm summer and lots of rain
celebrated their {n} birthday
When you would have been born if you lived as {name}
very hot all year round, frequent rains, but sometimes dry
Littoral Zone
Daddies
Lifespan maximum
foraging
whole life
Hermaphrodite ⚥
embryo
Hard, projecting mouthpart used to probe, pluck, or crack food.
Length
kg
lots of rain, warm and pleasant summer
Rapid forward strike to seize prey.
adult insects
Observations
◉{N} more on tap