What Animals Form a Colony?
A word for Roman settlers, borrowed by eleven very different animals that all share one address.
Which Animals Form a Colony?
“Colony” is one of the broadest terms on this site, applied to eleven animals across five different animal classes: birds (avocets, gulls, ibises, penguins, puffins), mammals (bats, beavers, rats), an amphibian (frogs), and two insects (lice, termites). What ties them together isn’t taxonomy at all — it’s shared living arrangements: dense, permanent, communal sites like nesting cliffs, burrows, caves, or roosts.
Where Does “Colony” Come From?
“Colony” comes from Latin colonia, a settlement of Roman citizens established in newly acquired territory, itself from colonus — “farmer” or “settler” — and ultimately colere, “to cultivate” or “to inhabit.” English borrowed the word in the 16th century for exactly that human sense: settlers establishing a new community abroad. By the 18th and 19th centuries, naturalists had extended it to biology, describing any group of organisms — animal, insect, or microbial — living together in a fixed, shared location.
Colony vs. Settlement vs. Commune
All three words describe a group establishing themselves together in one place, and all carry that same faint echo of “founding a home.” “Settlement” is the most neutral, general term. “Commune” leans toward shared, cooperative living specifically. “Colony” is the one biology adopted wholesale — it’s now the default scientific term across an enormous range of species, from bat roosts to insect nests to seabird cliffs.
Animal-by-Animal Breakdown
“Colony” is the genuine, standard scientific term for most of this list — bats, beavers, rats, lice, termites, and penguins are all reliably described this way, referring to their shared roosts, lodges, burrows, infestations, and nests respectively. Puffins and gulls use “colony” specifically for their densely packed cliffside nesting sites during breeding season. Avocets and ibises carry it as a documented secondary term alongside more specific bird-flock words. Frogs are the outlier — more commonly an “army” or “knot,” with “colony” used more loosely for a shared breeding pond.
🧠 Test Your Knowledge
Three quick questions. See what stuck.1. What does the Latin root “colonia” originally mean?
2. Which of these is NOT typically described as a colony?
3. What is the most common term for a group of frogs?
Frequently Asked Questions
What animals form a colony?
Avocets, bats, beavers, frogs, gulls, ibises, lice, penguins, puffins, rats, and termites are all described as a colony, referring to a shared, often permanent living site.
Why is colony used across so many different animals?
Because the term describes a living arrangement, not a species — any animal that establishes a dense, communal home base can be described as forming a colony.
Is colony a scientific term?
Yes, it’s widely used in biology and ecology as the standard word for groups of organisms living together in a fixed shared location.
What is the most common collective noun for frogs?
“Army” or “knot” are more common than “colony” for frogs, though colony is used for shared breeding sites.
Where does the word colony come from?
From Latin colonia, a settlement of Roman citizens, from colonus (“farmer” or “settler”) and ultimately colere, “to cultivate” or “to inhabit.”