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Coop & Clutch

Guides, and the arithmetic behind them

Everything this site recommends rests on a small number of published figures. These are the pages that explain them, with the working shown.

By Scooter M.Last reviewed September 1, 2026How we work the numbers out
A hen beside a rustic wooden barn on a sunny day

Every number on this site traces back to a published source, and every recommendation traces back to a number. These guides are where the sources and the arithmetic live, so that nothing on a product page has to be taken on trust.

Start here if you have not bought yet

Start here if the coop is already in the yard

Start here if the question is whether a thing will work

These are the suitability questions - a bird that is not a chicken, or a structure that was not built for one. Each has a published figure behind it and each ends in what to buy, because the answer is almost never simply yes or no.

The figures every guide rests on

Published guidance used throughout this site
FigureValue we useSource
Coop floor per standard hen4 sq ft (midpoint of a published 3-5 range)University of Minnesota Extension
Coop floor per bantam2 sq ftPublished range, lower end
Coop floor per large fowl5 sq ftPublished range, upper end
Run area per standard hen8 sq ftRoughly double the indoor figure
Roost bar per standard hen8 inExtension housing guidance
Nest boxes1 per 4 hensConservative end of a published 1-per-4-to-5

What we do not cover

This is a housing site. Feed rations, breed selection, hatching and incubation, and anything veterinary are outside what we can speak to responsibly, and there are extension services and veterinarians who can. Where a housing decision touches on health - ammonia and respiratory disease, frostbite, heat stress, parasite pressure - we cite the extension guidance and stop there.

Questions people actually ask

+Where does the 4 square feet per chicken figure come from?
University of Minnesota Extension publishes a range of 3 to 5 square feet of indoor space per bird for backyard flocks. We use 4 as the midpoint for standard-size hens, 2 for bantams and 5 for large fowl, and we double the figure for birds with no outdoor run access. Penn State Extension publishes a separate bantam row of its own - see coops for silkies and bantams for how that reads against real coops.
+What should I read first before buying a chicken coop?
The sizing guide, because floor area is the constraint that cannot be fixed later without buying again. After that, the manufacturer capacity claims guide, so the listing titles stop being persuasive, and the zoning page, because permits are worth checking before rather than after a purchase.
+Do you cover feed, breeds or chicken health?
No. This is a housing site, and feed rations, breed selection and veterinary matters are outside what we can speak to responsibly. Where housing decisions affect health - ammonia, frostbite, heat stress, parasites - we cite published extension guidance and link to it.

Sources

Why there is nothing to buy here: This is an index page for the reference library rather than a buying page. The individual guides carry picks where a product genuinely answers the question; sending you to a checkout from a table of contents would not.

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