The black-headed gull is a large seabird of the gull family with a dark gray back and yellow legs. It lives on coasts, flies and swims well, and feeds on various animal food.
The black-headed gull differs from the herring gull by its darker back and yellow legs. It is important for nature because it eats waste, cleans shores, and serves as prey for predators.
pecking
Worker
scraping
birth time
Submerges underwater to reach prey or food at depth.
Pelagic Ocean
very cold, short summer, lots of moss
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
Polar tundra
t
When your next jubilee falls in {name} life years
Human
hot Africa south of the desert, many savannas and forests
mangrove
detritus, eat dead remains of plants, animals and all kinds of organic debris on the bottom
very cold, short summer, almost no trees, lots of moss
days
Warm summer
invertebrates
How old you would be if you lived as {name}
crustaceans
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.
mollusks
Rasping or abrading food surfaces with teeth or mouthparts.
small planktonic crustaceans — copepods, krill
beak
adult
Maturity
organic debris
mangrove forests along the seacoast
Melon
invertebrates
insects
About health
marine coastal
vertebrates
Searches for food on or among rocks and stony surfaces.
kleptoparasitism
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
diving
mo
Uses jaws or beak to break hard-shelled or tough food items.
live fish
all seas and oceans
Trophic type
all living animals without backbone
Filters
Palearctic realm
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
rains almost always, very humid
Age (juvenile)
Age (from birth to death)
rock
Age (embryo)
most of Europe and Asia, various forests, steppes and tundra
Wanderers
Food items are collected from exposed outer surfaces of substrates.
Feeding occurs in open air space above ground or water.
Wings size
far from shore, deep water, large whales and sharks live here
Jubilee = every 10th birthday
marine coastal demersal
Tundra
Earliest developmental stage inside an egg or womb.
marine coastal benthic
Business sausages
zones of mixing fresh and sea water — river deltas, estuaries
Lifespan average
water is almost always cold, there may be ice in winter, not hot in summer
young after fast growth
Juvenile stage following larval metamorphosis but not yet adult.
What do they look like?
Maturity
scavenging
emergence (insects)
end of lifespan
Wings color
How do they live?
fertilization / egg laying
How do they behave?
birth / hatching
metamorphosis / end of larval stage
dead vertebrates
fish
end of acceleration
benthic biotope of coastal marine waters
Share
swampy freshwater biotopes — peat bogs, marshes, river mangroves
live snails, mussels, oysters
Find a pet...
Mature, fully developed individual capable of reproduction.
Cold sea
water is cool or warm, cold in winter, comfortable to swim in summer
Actively hunting and capturing live prey.
where the river flows into the sea, slightly salty water, lots of fish and birds
flight
Pets
Repeatedly strikes or probes substrate with beak to obtain food.
Feeding occurs primarily on land or in vegetation.
{name} jubilee
cm
carrion
Old-timers
Find an animal or breed...
Wingspan
Captures prey or food items while in active flight.
turns
Rascals
Flooded grasslands
hot Africa south of the desert, many savannas and forests
bird
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
Actively searching habitats to locate food items.
Where are they found?
all seas and oceans
from 0.8 to 1.2 kilograms, 0.6 – 1.2 meters
all rivers and lakes
Down color
estuary and delta
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
Bro
lakes and ponds
freshwater marsh and wetlands
Taxons
if born as {name}
cold, short summer, almost no trees
omnivore
age
birth date
swimming
Palearctic realm
Close
Egg shell color
was
Career from 7 to 15 months. Dwarf hamsters, voles, field crickets celebrate their birthday twice a month
Marine world
The basics
coastal
My weight?
demersal biotope of coastal marine waters
Non-stop carnival: they only live a few days. Mayflies, rotifers, midges celebrate their birthday more than twice a day
surface
primary food sources
Temperate sea
Beak size
Potential Habitat
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
cold winter, lots of coniferous trees: spruce, pine
Mosquitoes, fruit flies, small crustaceans hustle for up to 7 months and throw a birthday party every week
terrestrial
Gestation
aquatic
{name} birthday
No results found
On the map
lunge
Pleasant summer
all life stages
Female ♀
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.
birth year
Maturity
hunting from water surface and gathering
bird eggs
terrestrial habitat, land surface outside water
sq mm
yr
Beak color
comfortable summer, +20…+25 °C
How similar?
Male ♂
until the celebration
baby / chick
Tundra
hawking
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.
dead invertebrates
nest
What do they eat?
Where do they live?
Immature individual that has not yet reached reproductive maturity.
Marine world
from birth to death
Plumage color
water often floods the land, lots of grass
world of Afrotropics
River estuary into the sea
Freshwater
Temperate mixed forest
Duration
live insects
saline marine habitat
This is me
most of Europe and Asia, various forests, steppes and tundra
freshwater
Always very wet
Gamers
crushing
How are they built?
marine
shallow near the shore, water rises and falls, crabs live here
mm
Theoretical lifespan
ml
Stars
Link copied
coastal marine zone — shelf, neritic zone
My age?
wk
My size?
terrestrial
Taiga
Asexual
swap
freshwater environment — rivers, lakes, ponds, swamps
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?
Warm summer and lots of rain
celebrated their {n} birthday
When you would have been born if you lived as {name}
Littoral Zone
Daddies
Lifespan maximum
foraging
Capturing or collecting food while airborne.
whole life
Hermaphrodite ⚥
embryo
Hard, projecting mouthpart used to probe, pluck, or crack food.
summer warm, many oaks, birches, maples
Length
kg
lots of rain, warm and pleasant summer
Rapid forward strike to seize prey.
Observations
◉{N} more on tap