What’s the plural of “bison”?
What’s the plural of bison? Let’s not beat around the bison beard hair and cut to the chase on this large land-dwelling mammal, the bison.
We saw several large bison grazing in the field.
The zoo acquired another American bison for its collection.
The park service is tracking a herd of bisons.
They spotted only one small bisons near the tree line.
- Bison is the same singular and plural; both are just bison.
- Bisons with an “s” is accepted, though it’s less common than bison without the “s”. Some sources say bisons is nonstandard, and to avoid its use.
| Examples: “bison” used in sentences | |
| singular | The bison charged as the man took photos from a few feet away. |
| plural | Defenders supports bison conservation on both public and tribal lands. |
What are “bison”? Are they the same as buffalo or oxen?
Bison belong to the bovine family, which includes buffaloes and oxen. Bison are the largest land-dwelling mammal in North America, and though related, there are distinct differences between buffalo and bison.
According to Smithsonian’s National Zoo, the differences between bison and buffalo are:
Bison have large humps at their shoulders and bigger heads than buffalo. They also have beards, as well as thick coats which they shed in the spring and early summer.
—Smithsonian National Zoo, bison.
While both bison and buffalo share the bovidae lineage, they’re not so closely related, and have different geographical roots. The “true” buffalo hail from Africa and Asia, and primarily include the water buffalo and the Cape buffalo. Bison, on the other hand, are indigenous to North America and Europe.
Invisible plural nouns
Some nouns look the same plural and singular, and bison is simply one of those nouns.
This makes it irregular, and explains why the plural of bison is so often mistaken for bisons; which, technically, is not incorrect (apologies for the use of a double negative). Other nouns that work this way are sheep, fish, aircraft, water and the one’s listed below.
Like bison, beer, deer, moose, shrimp, all stay the same in both their singular and plural noun forms. This sounds confusing, but in most cases, it’s straightforward to figure out whether the noun referenced is plural or singular.
For example, in the case of bison: bison are a herd animal that travel in groups; similarly, fish, salmon, shrimp, trout, and moose (which are all irregular plural nouns that stay the same in singular and plural) often travel in groups (maybe with the exception of moose.) Though it sounds unnerving that a noun should include no change whatsoever in both plural and singular forms, once you learn the correct use and rules of plural noun forms, it’s less complicated and starts to make sense.
The plural of ‘bison’, think of ‘deer’ or ‘sheep’; the singular and plural forms are identical.
Examples of bison as (singular), in sentences
Bison are the most unpredictable and dangerous animals in Yellowstone (apart from the nuts that hold the steering wheels).
Bison numbering in the tens of millions once roamed the High Plains.
Of the two surviving species, the American bison, found only in North America, is the more numerous.
While bison species have been traditionally classified in their own genus, modern genetics indicates that they are nested within the genus Bos, which includes, among others, cattle, yaks and gaur, being most closely related to yaks.
Bison are sometimes bred with domestic cattle and produce offspring called beefalo or zubron.
Origin of the word bison
c. 1600 from the French bison, meaning:
“European wild ox.” This was brought down from the Latin, bison “wild ox.” Bison was brought down from the Germanic languages, (see wisand- “aurochs”) and has Proto-Indo-European roots.
In review: the plural of “bison”
The plural and singular of bison are the same; both are just bison.
Read about other topics in grammar
Work Sheet
What is the most common and preferred plural form of “bison” according to the blog post?
The blog post mentions that the plural form “bisons” with an “s” is:
Based on the usage notes in the post, which sentence correctly uses the plural of “bison”?
According to the blog post, bison are indigenous to which regions?
Besides “bison,” which of the following nouns is listed in the post as having the same singular and plural form?
We saw several large grazing in the field.
The Defenders organization supports conservation efforts.
A single charged as the man took photos.
According to the post, true buffaloes from Africa and Asia are different from .
The post lists deer and as other nouns that stay the same in singular and plural.
Frequently Asked Questions
Is “bison” singular or plural?
+
Is “bisons” acceptable?
+
Why is bison plural irregular?
+
Are other words like bison?
+
How to tell singular/plural “bison”?
+
Yash, D. "What’s the Plural of Bison? Bisons or Bison?." Grammarflex, Jun 17, 2025, https://www.grammarflex.com/whats-the-plural-of-bison/.
Sources
-
Wikipedia: bison. Origin of bison Bison facts Smithsonian zoo on bison Wikipedia contributors. “Bovinae.” Wikipedia, The Free Encyclopedia. Wikipedia, The Free Encyclopedia, 14 Oct. 2023. Web. 18 Dec. 2023.
