The mourning black-and-blue jay is a medium-sized bird from the crow family. It has black plumage on the head, wings, and tail, and bright blue-purple on the back.
The mourning black-and-blue jay stands out with its bright purple back color from other jays. It disperses plant seeds and eats harmful insects.
Searches for food on branches and on the ground.
meadows, prairies, forb glades on land
Worker
birth time
bottom
Hot and almost no precipitation
Picking small food items from foliage, ground, or other surfaces.
Heavy rains in summer
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
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.
very heavy rains in summer, almost no precipitation in winter
beak
adult
Maturity
plant
South and Central America, hot and humid, huge forests
invertebrates
insects
About health
anything
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
mo
rains are very rare, almost a desert
conifer cones
Trophic type
all living animals without backbone
Filters
summer very hot, dry, lots of grass
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
Height
Age (juvenile)
Age (from birth to death)
cones of coniferous trees with seeds
Foraging occurs on the floor of aquatic or terrestrial habitats.
Age (embryo)
Wanderers
Feeding occurs in open air space above ground or water.
Jubilee = every 10th birthday
Earliest developmental stage inside an egg or womb.
Business sausages
fruits
Lifespan average
leaf litter
What do they look like?
Maturity
emergence (insects)
end of lifespan
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
end of acceleration
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Mature, fully developed individual capable of reproduction.
gleaning
Actively hunting and capturing live prey.
flight
Pets
terrestrial shrubland
Tropical dry broadleaf forest
Hot steppe
Feeding occurs primarily on land or in vegetation.
Legs size
{name} jubilee
terrestrial shrub habitats — maquis, chaparral, bush
cm
Old-timers
Find an animal or breed...
Wingspan
turns
Rascals
terrestrial forest
terrestrial herbaceous
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
Actively searching habitats to locate food items.
Where are they found?
Summer almost without rain
Down color
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
Foraging among accumulated fallen leaves on the forest floor.
Bro
small vertebrates without specifying the group
Taxons
seeds, berries, fruits
almost no rain in summer, more precipitation in winter
hot, rains in winter, almost no precipitation in summer
if born as {name}
Foraging takes place among trees and woody vegetation.
omnivore
age
birth date
swimming
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
primary food sources
Neotropical realm
Beak size
after transformation until death
Potential Habitat
lots of grass, few trees, rains are rare
Hot, almost no rain in 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
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
Food is gathered directly from leaf surfaces.
Always hot
No results found
omnivory, they eat plants, animals, and mushrooms — almost any food
On the map
all life stages
Female ♀
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
terrestrial habitat, land surface outside water
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?
Very dry
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?
Immature individual that has not yet reached reproductive maturity.
Plumage color
forests on land — tropical, temperate, boreal
branch
small vertebrates
Duration
live insects
This is me
Steppe
Gamers
How are they built?
mm
Theoretical lifespan
ml
Stars
Link copied
My age?
wk
My size?
terrestrial
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?
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
Daddies
Lifespan maximum
very hot and almost no precipitation
foraging
Capturing or collecting food while airborne.
whole life
Hermaphrodite ⚥
embryo
Hard, projecting mouthpart used to probe, pluck, or crack food.
Zucchini
Length
kg
arboreal
Observations
◉{N} more on tap