Firecrest

Common firecrest — © Zveriki.com, AI-generated image based on the original work of Frank Vassen, Creative Commons Attribution-Share Alike 2.0 Generic

Age

The common firecrest’s typical lifespan ranges from 5 years and 3 months to 8 years and 9 months, although the maximum recorded lifespan is 7 years, and the theoretical lifespan is from 5 years to 6 years and 5 months; the species reaches sexual maturity between 2 months and 1 year and 1 month. Development begins with the embryo stage, where the developing offspring resides within an egg, followed by the nestling stage, during which the young are fed by their parents. Subsequently, the rapid-growth juvenile stage lasts from 2 weeks and 6 days to 1 year, as the young bird learns to fly and forage for food. The adult stage, characterized by reproductive capability, spans from 1 to 7 years.

Phenotype

The young firecrest has downy feathers covering its body, with eyes closed during the first days; after rapid growth, the plumage is duller than that of adults, and the crest is small and pale. An adult goldcrest possesses a short and thin beak suitable for catching small insects, and large dark eyes with a white brow above them. The species exhibits a brightly orange crest edged with black, which rises when it is agitated. Its plumage is olive-green on the back, light on the belly, and features two white stripes on the wings.

Physiology

The common firecrest is a small bird with a body length ranging from 8.5 to 9.5 centimeters and a wingspan of 14 centimeters; its mass varies from 7.99 to 10 grams. The embryo stage has a body mass between 0.4 and 0.6 grams, while the nestling stage exhibits a body mass ranging from 0.8 to 4.5 grams and a body length of 4 to 6 centimeters. Following rapid growth, the young bird’s body mass is between 4.5 and 6 grams, with a body length of 8 to 9 centimeters. The adult firecrest has a body mass from 5 to 7 grams and a body length from 8.5 to 9.5 centimeters.

Habitat

Common firecrests inhabit land and forest environments, specifically at elevations up to 1.8 kilometers. The species occupies temperate mixed forests with warm summers and many oaks, birches, and maples, as well as flooded meadows where water frequently covers the ground and there is abundant grass. The climate is consistently very wet with frequent rain and high humidity; summers are cool with significant rainfall and snow in winter, or summers are warm and pleasant with abundant rain, or summers are simply warm and winters are not very cold.

Shelter

Common firecrests are found on the branches of coniferous or deciduous trees, often high up; the species builds or uses nests for laying eggs and raising young; these nests are constructed from lichens, cobwebs, moss, and feathers.

Geography

The common firecrest is found within the Palearctic biogeographical region and occupies several distinct ecosystems, including Celtic broadleaf forests, broadleaf forests of Western Europe, coniferous forests of the Qilian Mountains, Balkan mixed forests, Baltic mixed forests, and coniferous and mixed forests of the Pyrenees.

Feeding

The common firecrest feeds on small insects and spiders, quickly inspecting branches and leaves to find prey, obtaining food from plants; its diet includes small insects, spiders, insect larvae, an insect, and plant matter, with a feeding strategy focused on searching for and acquiring food. The species’ prey consists of butterflies, flies, Hymenoptera, beetles, bugs, Orthoptera, dragonflies, stoneflies, and lacewings. Daily food consumption ranges from 1.5 grams to 3 grams.

Reproduction

The female firecrest builds a nest and incubates the eggs, while the male guards the territory and assists in feeding the young; embryonic development takes 1 week and 2 days. A clutch contains from 7 to 11 eggs, and the species has one or two clutches per season. The female raises from 7 to 11 young per brood. Maturity is reached from 10 months to 1 year and 1 month. The reproductive interval is from 1 year to 1 year and 1 month.

Mass
7.99–10 g
Length
85–95 mm
Lifespan
1918–3196 days 5–9 years
27471
0
1
common-firecrest
en
common firecrest
Regulus ignicapilla
The red-headed kinglet is one of the smallest birds in Europe. It has a bright crest on its head, a green back, and a very thin beak.
The red-headed kinglet differs from the yellow-headed kinglet by a brighter orange crest in males and a white stripe above the eyes. It is beneficial to the forest because it destroys a large number of harmful insects.
foraging prey from plants
trophic:insectivore
#fdfdfd
Mass (egg)
0.4–0.6 g
Mass (adult bird)
5–7 g
Mass (fledgling)
4.5–6 g
Mass (chick)
0.8–4.5 g
Length (chick)
40–60 mm
Length (fledgling)
80–90 mm
Length (adult bird)
85–95 mm
Wingspan
140 mm
Lifespan maximum
2557 days 7 years
Theoretical lifespan
1812–2330 days 5–6 years
Gestation
9.38 days 1 week 2 days
Litter size
7–11
Maturity
300–400 days 10 months – 1 year 1 month
Offspring
7–11
Repro interval
365–400 days 1 year
Egg shell count (egg)
1
Beak count (adult bird)
1
Beak size (adult bird)
7–9 mm
Comparable in mass
Grape
Biome
Flooded grasslands
Biome
Temperate mixed forest
Realm
Palearctic realm
Habitat (whole life)
terrestrial forest
Climate
Always very wet
Climate
Warm summer and lots of rain
Climate
Cool summer and lots of rain
Landscape
terrestrial
Climate
Pleasant summer
Climate
Lots of rain and cool summer
Climate
Warm summer
Food environment
arboreal
Food environment
terrestrial
Shelter
nest
Trophic type
insectivore
Reproduction (egg)
Egg shell color
1917.5625
3195.9375
1812.2045497764295
2329.977278283981
85.0
95.0
7.994450599861252
9.998064153424842
Worker
Were {name} like {animal}, then:
birth time
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
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 bird
Maturity
plant
invertebrates
About health
When your next birthday would fall if you lived as {name}
Repro interval
results
summer warm, winter not very cold
Colors
Sex
Upcoming jubilees
Gremllins
mo
Trophic type
all living animals without backbone
Filters
Palearctic realm
Upcoming birthdays
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
leaf
rains almost always, very humid
Age (juvenile)
insect larvae and caterpillars
Age (from birth to death)
Age (embryo)
most of Europe and Asia, various forests, steppes and tundra
Wanderers
Food items are collected from exposed outer surfaces of substrates.
Jubilee = every 10th birthday
More:
Earliest developmental stage inside an egg or womb.
Business sausages
Lifespan average
Egg shell count
fledgling
Juvenile stage following larval metamorphosis but not yet adult.
What do they look like?
Maturity
emergence (insects)
end of lifespan
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.
Pets
Lots of rain and cool summer
Feeding occurs primarily on land or in vegetation.
{name} jubilee
cm
Old-timers
Find an animal or breed...
Wingspan
turns
Rascals
terrestrial forest
Flooded grasslands
insect
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
Share
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
foraging prey from plants
if born as {name}
Foraging takes place among trees and woody vegetation.
age
birth date
Palearctic realm
Close
Egg shell color
was
Career from 7 to 15 months. Dwarf hamsters, voles, field crickets celebrate their birthday twice a month
Head crest color
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
surface
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
Mosquitoes, fruit flies, small crustaceans hustle for up to 7 months and throw a birthday party every week
terrestrial
Gestation
{name} birthday
Food is gathered directly from leaf surfaces.
Link copied
No results found
Eyes color
On the map
Pleasant summer
all life stages
Female ♀
insectivore
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
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?
spiders
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?
insect larvae
Where do they live?
Immature individual that has not yet reached reproductive maturity.
from birth to death
Plumage color
forests on land — tropical, temperate, boreal
water often floods the land, lots of grass
branch
Temperate mixed forest
small insects
Duration
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
small insects without further specification
mm
Theoretical lifespan
ml
Stars
Link copied
My age?
wk
My size?
live spiders — arachnids of all sizes
terrestrial
Asexual
swap
Who among us will transform as if by magic and become like {animal}?
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}
Daddies
Lifespan maximum
foraging
whole life
Hermaphrodite ⚥
Grape
8 to 11 grams, 1.5 – 8 centimeters
egg
summer warm, many oaks, birches, maples
Length
kg
lots of rain, warm and pleasant summer
arboreal
Observations
◉{N} more on tap
chick
pupa
imago
young bird
common-firecrest
krasnogolovyj-korolyok
common-firecrest
s-w-ahmr-al-rf
chyrvonagalovy-karalyok
karmraglux-ark-ayik
mamijirokikuitadaki
ts-iteltava-narchit-a
krasnogolovyj-korolyok
common-firecrest
krasnogolovyj-korolyok
vatroglavi-kralic
common-firecrest
krasnogolovyj-korolyok
pu-tong-dai-ju
  • The common firecrest is one of the smallest birds in Europe, measuring no more than 9 cm in length and weighing 4–7 g. Along with its close relative, the golden-headed kinglet, it has the same plumage coloration.
  • The common firecrest has a flat sole, whereas the golden-headed kinglet has grooves that allow it to grasp single needles. The golden-headed kinglet’s well-developed hind toe enables it to move along vertical trunks and even hang upside down.
  • The digestive system of the common firecrest is adapted only to an insectivorous diet. In closely related species, such as the tit, the body can digest plant-based food.
  • The common firecrest feeds almost exclusively on small arthropods with soft exoskeletons. It catches springtails, aphids, and spiders, including hanging in the air and pulling prey from webs.
  • The common firecrest can live in urban parks and large gardens, just as in the wild. The density of its populations in cultural landscapes is comparable to the density in the most favorable natural conditions.
  • The Argentine ant displaces local ants, reducing the food base for the common firecrest. This forces the bird to spend more time searching for food.
  • The common firecrest’s mating song consists of 11–14 segments, each of which is louder and faster than the previous one. The song lasts from 0.5 to 2.5 seconds and is repeated up to 8 times per minute.
  • The common firecrest has wide white eyebrows, which the golden-headed kinglet lacks. Above the eyebrows is a black stripe—thicker than that of the golden-headed kinglet.
  • In winter, the common firecrest surveys its territory three times faster than the yellow-billed firecrest, ignoring small arthropods. Yellow-billed firecrests do not miss such prey.

Age

The common firecrest’s typical lifespan ranges from 5 years and 3 months to 8 years and 9 months, although the maximum recorded lifespan is 7 years, and the theoretical lifespan is from 5 years to 6 years and 5 months; the species reaches sexual maturity between 2 months and 1 year and 1 month. Development begins with the embryo stage, where the developing offspring resides within an egg, followed by the nestling stage, during which the young are fed by their parents. Subsequently, the rapid-growth juvenile stage lasts from 2 weeks and 6 days to 1 year, as the young bird learns to fly and forage for food. The adult stage, characterized by reproductive capability, spans from 1 to 7 years.

Phenotype

  • The digestive system of the common firecrest is adapted only to an insectivorous diet. In closely related species, such as the tit, the body can digest plant-based food.
  • The common firecrest has wide white eyebrows, which the golden-headed kinglet lacks. Above the eyebrows is a black stripe—thicker than that of the golden-headed kinglet.

The young firecrest has downy feathers covering its body, with eyes closed during the first days; after rapid growth, the plumage is duller than that of adults, and the crest is small and pale. An adult goldcrest possesses a short and thin beak suitable for catching small insects, and large dark eyes with a white brow above them. The species exhibits a brightly orange crest edged with black, which rises when it is agitated. Its plumage is olive-green on the back, light on the belly, and features two white stripes on the wings.

Physiology

  • The Argentine ant displaces local ants, reducing the food base for the common firecrest. This forces the bird to spend more time searching for food.

The common firecrest is a small bird with a body length ranging from 8.5 to 9.5 centimeters and a wingspan of 14 centimeters; its mass varies from 7.99 to 10 grams. The embryo stage has a body mass between 0.4 and 0.6 grams, while the nestling stage exhibits a body mass ranging from 0.8 to 4.5 grams and a body length of 4 to 6 centimeters. Following rapid growth, the young bird’s body mass is between 4.5 and 6 grams, with a body length of 8 to 9 centimeters. The adult firecrest has a body mass from 5 to 7 grams and a body length from 8.5 to 9.5 centimeters.

Habitat

Common firecrests inhabit land and forest environments, specifically at elevations up to 1.8 kilometers. The species occupies temperate mixed forests with warm summers and many oaks, birches, and maples, as well as flooded meadows where water frequently covers the ground and there is abundant grass. The climate is consistently very wet with frequent rain and high humidity; summers are cool with significant rainfall and snow in winter, or summers are warm and pleasant with abundant rain, or summers are simply warm and winters are not very cold.

Shelter

Common firecrests are found on the branches of coniferous or deciduous trees, often high up; the species builds or uses nests for laying eggs and raising young; these nests are constructed from lichens, cobwebs, moss, and feathers.

Geography

The common firecrest is found within the Palearctic biogeographical region and occupies several distinct ecosystems, including Celtic broadleaf forests, broadleaf forests of Western Europe, coniferous forests of the Qilian Mountains, Balkan mixed forests, Baltic mixed forests, and coniferous and mixed forests of the Pyrenees.

Feeding

  • The digestive system of the common firecrest is adapted only to an insectivorous diet. In closely related species, such as the tit, the body can digest plant-based food.
  • The common firecrest feeds almost exclusively on small arthropods with soft exoskeletons. It catches springtails, aphids, and spiders, including hanging in the air and pulling prey from webs.
  • The Argentine ant displaces local ants, reducing the food base for the common firecrest. This forces the bird to spend more time searching for food.

The common firecrest feeds on small insects and spiders, quickly inspecting branches and leaves to find prey, obtaining food from plants; its diet includes small insects, spiders, insect larvae, an insect, and plant matter, with a feeding strategy focused on searching for and acquiring food. The species’ prey consists of butterflies, flies, Hymenoptera, beetles, bugs, Orthoptera, dragonflies, stoneflies, and lacewings. Daily food consumption ranges from 1.5 grams to 3 grams.

Reproduction

The female firecrest builds a nest and incubates the eggs, while the male guards the territory and assists in feeding the young; embryonic development takes 1 week and 2 days. A clutch contains from 7 to 11 eggs, and the species has one or two clutches per season. The female raises from 7 to 11 young per brood. Maturity is reached from 10 months to 1 year and 1 month. The reproductive interval is from 1 year to 1 year and 1 month.

Size

  • The common firecrest is one of the smallest birds in Europe, measuring no more than 9 cm in length and weighing 4–7 g. Along with its close relative, the golden-headed kinglet, it has the same plumage coloration.
  • The common firecrest is one of the smallest birds in Europe, measuring no more than 9 cm in length and weighing 4–7 g. Along with its close relative, the golden-headed kinglet, it has the same plumage coloration.
  • The common firecrest has a flat sole, whereas the golden-headed kinglet has grooves that allow it to grasp single needles. The golden-headed kinglet’s well-developed hind toe enables it to move along vertical trunks and even hang upside down.
  • The digestive system of the common firecrest is adapted only to an insectivorous diet. In closely related species, such as the tit, the body can digest plant-based food.
  • The common firecrest can live in urban parks and large gardens, just as in the wild. The density of its populations in cultural landscapes is comparable to the density in the most favorable natural conditions.
  • The Argentine ant displaces local ants, reducing the food base for the common firecrest. This forces the bird to spend more time searching for food.
  • The common firecrest’s mating song consists of 11–14 segments, each of which is louder and faster than the previous one. The song lasts from 0.5 to 2.5 seconds and is repeated up to 8 times per minute.
  • In winter, the common firecrest surveys its territory three times faster than the yellow-billed firecrest, ignoring small arthropods. Yellow-billed firecrests do not miss such prey.