The black-billed American cuckoo is a medium-sized bird with a black bill. It lives in the forests of North America and feeds on harmful caterpillars.
The black-billed American cuckoo differs from related species by its completely black bill and white spots on the tail. It is important for nature because it destroys many harmful caterpillars in forests.
Collects prey from leaves and branches of trees and shrubs.
meadows, prairies, forb glades on land
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
perch
g
lots of rain, warm summer, snow in winter
t
When your next jubilee falls in {name} life years
Human
days
South and Central America, hot and humid, huge forests
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
plant
South and Central America, hot and humid, huge forests
invertebrates
About health
cool, lots of coniferous trees, snow in winter
When your next birthday would fall if you lived as {name}
Repro interval
results
land coast flooded by tides — salt marshes, littoral zone
summer warm, winter not very cold
Colors
Sex
Upcoming jubilees
Gremllins
mo
alpine meadows and arctic tundra on land
Trophic type
all living animals without backbone
Filters
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
leaf
Height
rains almost always, very humid
Age (juvenile)
Age (from birth to death)
Age (embryo)
Wanderers
Jubilee = every 10th birthday
berries
Earliest developmental stage inside an egg or womb.
Business sausages
Lifespan average
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
Egg count
Actively hunting and capturing live prey.
Pets
Nearctic realm
juicy berries — bilberry, rowan, rosehip
Lots of rain and cool summer
Feeding occurs primarily on land or in vegetation.
{name} jubilee
cm
Temperate coniferous forest
Old-timers
Find an animal or breed...
Wingspan
turns
Rascals
terrestrial forest
terrestrial herbaceous
terrestrial intertidal
Tail color
Flooded grasslands
insect
Forages on tree limbs or woody stems within vegetation.
grasshoppers and crickets
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.
Egg color
Where are they found?
38 to 65 grams, 15 – 40 centimeters
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
if born as {name}
Foraging takes place among trees and woody vegetation.
beetles
age
birth date
Close
was
Career from 7 to 15 months. Dwarf hamsters, voles, field crickets celebrate their birthday twice a month
The basics
climbing
Neotropical realm
My weight?
Non-stop carnival: they only live a few days. Mayflies, rotifers, midges celebrate their birthday more than twice a day
Mouth color
primary food sources
Neotropical realm
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
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
vision
summer very hot, above +25…+30 °C
{name} birthday
Food is gathered directly from leaf surfaces.
Nearctic realm
No results found
North America and Greenland, from tundra to forests
caterpillars
On the map
lunge
Pleasant summer
all life stages
Female ♀
insectivore
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?
spiders
Neither
Moving up vertical surfaces like trunks or rocks to reach food.
butterfly and moth caterpillars
from birth to adulthood
live beetles — various species
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.
Lots of rain and warm summer
from birth to death
much snow in winter, cold
Plumage color
forests on land — tropical, temperate, boreal
water often floods the land, lots of grass
branch
Temperate mixed forest
Duration
This is me
Always very wet
Gamers
How are they built?
mm
Theoretical lifespan
ml
Stars
Link copied
My age?
wk
My size?
live spiders — arachnids of all sizes
terrestrial
Taiga
Asexual
swap
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
live grasshoppers, crickets, locusts
When you would have been born if you lived as {name}
Daddies
Lifespan maximum
foraging
whole life
Hermaphrodite ⚥
North America and Greenland, from tundra to forests
Primarily detects and locates food using eyesight.
embryo
Hard, projecting mouthpart used to probe, pluck, or crack food.
Orange
summer warm, many oaks, birches, maples
Length
kg
lots of rain, warm and pleasant summer
Rapid forward strike to seize prey.
arboreal
Observations
◉{N} more on tap