The correct spelling is "chicken coop" — two words

Chicken coop is spelled as two separate words: "chicken" and "coop". The word "chicken" refers to the bird, and "coop" is a cage or enclosure. Together they name the structure where chickens are kept. This is the standard spelling in English dictionaries and agricultural writing.

The confusion often arises because people sometimes write it as one word ("chickencoop") or hyphenate it ("chicken-coop"). Neither of these is correct in formal writing. Dictionaries including Merriam-Webster and Oxford list it as two words. When you are writing about your backyard flock or reading poultry care guides, you will see it consistently spelled this way across farming publications, university extension services, and homesteading resources.

Key Takeaways

  • Chicken coop is always two words, never one word or hyphenated in standard English.
  • The word "chicken" is spelled c-h-i-c-k-e-n, and "coop" is spelled c-o-o-p, with two o's in the middle.
  • Compound words in English follow no single rule, but chicken coop has remained two words in all major dictionaries.
  • When writing about poultry housing for school, work, or publication, the two-word spelling matches professional agricultural and homesteading standards.
  • Spell-check tools on computers and phones will flag "chickencoop" as incorrect and suggest the proper two-word version.

Breaking down each word

"Chicken" comes from Old English and refers to the domesticated bird raised for eggs and meat. It is spelled with a "ch" at the start, followed by "i-c-k-e-n". A common misspelling is "chiken" (missing the second "c"), but the correct spelling includes both c's. The double "c" is straightforward to overlook when typing quickly, which is why this error appears so often in casual writing.

"Coop" is a short word meaning a cage, pen, or enclosed space. It is spelled c-o-o-p, with two o's in the middle. The word comes from the Dutch "koop" and has been used in English for centuries to describe animal enclosures. A coop can house chickens, rabbits, or other small animals, but when paired with "chicken," it refers specifically to a poultry enclosure.

Why people spell it wrong

The two-word spelling sometimes gets confused because compound words in English follow no single rule. Some compound words are written as one word (like "notebook" or "baseball"), some are hyphenated (like "mother-in-law"), and some remain two words (like "chicken coop"). There is no way to predict which form a compound will take without checking a dictionary. Even experienced writers sometimes have to look up whether a particular compound is one word, two words, or hyphenated.

Typing "chicken coop" quickly can also lead to running the words together, especially on phones or in handwriting. Spell-check on most devices will flag "chickencoop" as incorrect and suggest the two-word version, which is a useful reminder. However, spell-check does not catch every error, so knowing the correct spelling yourself prevents mistakes in formal writing.

How chicken coop appears in writing

In published books about farming and homesteading, "chicken coop" appears as two words. The same is true in government agricultural guides, university extension publications, and online farming resources. If you are writing about poultry housing and want to match professional standards, use the two-word form. You will find it this way in publications from land-grant universities, the USDA, and major homesteading organizations.

When "chicken coop" appears at the start of a sentence, only the "c" in "chicken" is capitalized: "Chicken coop construction requires sturdy wood and good ventilation." You do not capitalize "coop" unless it is part of a proper name, such as "The Red Barn Chicken Coop" (a specific structure). This capitalization rule applies whether you are writing a school essay, a blog post, or a formal document.

Related terms and their spelling

Other poultry housing terms follow similar patterns. A "chicken run" is an outdoor enclosure and is also two words. A "chicken house" or "chicken shed" are likewise two words. The word "henhouse" (a house for laying hens) is sometimes written as one word, though "hen house" as two words is also correct and equally acceptable in most style guides.

If you are building or describing a chicken coop, you may also encounter terms like "nesting box" (two words), "roost" (one word), and "waterer" (one word). Each has its own standard spelling, but "chicken coop" remains the most common term for the overall structure. Learning the correct spelling of the main term helps you recognize and use related terms correctly as well.

Checking your spelling in different contexts

When you are unsure about spelling, a dictionary is your most reliable resource. Merriam-Webster, Oxford, and Cambridge dictionaries all list "chicken coop" as two words. Online dictionaries are free and searchable, making them straightforward to check while you write. Many word processors also include a dictionary function that you can access by right-clicking on a word.

If you are writing for a specific publication or organization, check their style guide. Most style guides (such as the Chicago Manual of Style or AP Stylebook) confirm the two-word spelling. For school assignments, ask your teacher which style guide to follow, though all major guides agree on "chicken coop" as two words.

Frequently Asked Questions

Is it ever correct to write "chickencoop" as one word?

No. Standard dictionaries and agricultural publications do not recognize "chickencoop" as a single word. While language does evolve and some compound words eventually merge into one word, chicken coop has not undergone this change and remains two words in all major English dictionaries.

Should I use a hyphen between chicken and coop?

No. "Chicken-coop" with a hyphen is not standard. Hyphens are used in some compound words (like "mother-in-law"), but chicken coop is not one of them. Use two separate words without a hyphen.

Does the spelling change if I'm using it as an adjective?

The spelling stays the same, but the usage might change slightly. You can write "a chicken coop door" or "chicken coop bedding" — the words remain separate. Some writers hyphenate when a compound modifies a noun (like "chicken-coop door"), but this is optional and not required by standard style guides.

What if I see it spelled differently online?

Informal writing online sometimes uses "chickencoop" or other variations, but these are not correct in formal or published writing. If you are writing for school, work, or publication, use the two-word spelling to match standard English conventions.