The common hazel grouse is a small bird of the grouse family. It lives in the forests of Europe and Asia, has variegated plumage for camouflage among branches and leaves.
The common hazel grouse differs from other grouse by its small body size and characteristic whistle instead of loud mating calls. It is important for the forest because it spreads plant seeds and serves as prey for predators.
Immature form that undergoes metamorphosis before adulthood.
Worker
birth time
Picking small food items from foliage, ground, or other surfaces.
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
summer mild, +15…+20 °C
lots of rain, warm summer, snow in winter
t
When your next jubilee falls in {name} life years
Human
Legs count
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
plant
invertebrates
insects
About health
When your next birthday would fall if you lived as {name}
Repro interval
results
Colors
Cool summer
Sex
Upcoming jubilees
Gremllins
mo
conifer cones
alpine meadows and arctic tundra on land
Trophic type
all living animals without backbone
Filters
plant buds
Palearctic realm
Upcoming birthdays
Breeding structure built or used for laying eggs and raising offspring.
Winter with snow
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)
cones of coniferous trees with seeds
Age (embryo)
most of Europe and Asia, various forests, steppes and tundra
Wanderers
Wings size
Jubilee = every 10th birthday
berries
Earliest developmental stage inside an egg or womb.
Business sausages
fruits
Lifespan average
leaves
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
metamorphosis / end of larval stage
end of acceleration
Share
Find a pet...
Mature, fully developed individual capable of reproduction.
gleaning
Pets
juicy berries — bilberry, rowan, rosehip
Lots of rain and cool summer
Feeding occurs primarily on land or in vegetation.
Legs size
{name} jubilee
cm
Old-timers
Find an animal or breed...
Wingspan
turns
Rascals
terrestrial forest
Flooded grasslands
Forages on tree limbs or woody stems within vegetation.
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
alpine and arctic tundra
Actively searching habitats to locate food items.
Where are they found?
lots of rain, cool summer, snow in winter
Legendary longevity: over 100 years. Galapagos tortoises, Greenland sharks, ocean quahogs celebrate with family once every 4 years
Offspring
Elders
Bro
Taxons
seeds, berries, fruits
if born as {name}
Foraging takes place among trees and woody vegetation.
omnivore
Wings count
age
birth date
Palearctic realm
Close
was
Career from 7 to 15 months. Dwarf hamsters, voles, field crickets celebrate their birthday twice a month
The basics
climbing
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
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
lots of rain, summer not hot
Mass
young shoots and leaves of plants
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
from 130 grams to 0.5 kilograms, 0.35 – 0.8 meters
{name} birthday
No results found
On the map
Pleasant summer
Female ♀
all life stages
Down feathers color
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.
Beak count
birth year
Maturity
terrestrial habitat, land surface outside water
sq mm
yr
Beak color
comfortable summer, +20…+25 °C
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
Moving up vertical surfaces like trunks or rocks to reach food.
from birth to adulthood
Young offspring still dependent on parental care.
nest
What do they eat?
Where do they live?
unopened buds and plant buds
Immature individual that has not yet reached reproductive maturity.
Lots of rain and warm summer
from birth to death
much snow in winter, cold
early young
Plumage color
forests on land — tropical, temperate, boreal
water often floods the land, lots of grass
branch
Duration
live insects
This is me
most of Europe and Asia, various forests, steppes and tundra
Always very wet
Gamers
How are they built?
Cool summer and lots of rain
mm
Theoretical lifespan
ml
Stars
Link copied
My age?
wk
My size?
terrestrial
Taiga
Asexual
swap
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?
celebrated their {n} birthday
When you would have been born if you lived as {name}
Daddies
Lifespan maximum
foraging
whole life
Hermaphrodite ⚥
embryo
Hard, projecting mouthpart used to probe, pluck, or crack food.
Zucchini
Length
kg
arboreal
Observations
◉{N} more on tap