Your backyard
as a living
food system
Practical supplies for people raising hens, building soil, and growing food at home.
100% natural calcium for laying hens
Made by hand from Portland Maine oyster shells.
Backyard hens work hard. Every egg they lay pulls calcium from their body, and if they don’t have a steady source to draw from, their shells can get thin, weak, or inconsistent.
We set out to make a simple, natural calcium supplement for small flocks without synthetic inputs. Oyster shells are naturally rich in calcium carbonate, and unfortunately most people just throw them away.
We collect these shells from local seafood producers, then wash, heat-sterilize, and crush them for free-choice feeding. It’s a clean, circular calcium source, for the chickens you know by name.
Your flock is part of the family. They deserve the best.
FREE SHIPPING!
Five pound bag of crushed oyster shells.
Give your laying hens the natural calcium they need for strong, healthy eggshells. Made from 100% Maine oyster shells; washed, heat-dried, and crushed to the perfect size for your backyard flock.
Benefits:
Prevents thin, rubbery, or easily cracked eggs.
Keeps your high-producing layers from pulling calcium from their own bones.
Contains larger flakes for slow-release digestion, and smaller pieces for fast calcium absorption.
100% Natural. Zero additives, zero synthetic chemicals. Just pure oyster shells.
How to Feed:
Serve "Free-Choice"
Place the crushed shells in a separate, dry dish next to their regular layer feed.
Your hens are incredibly smart. They will naturally eat the right amount of calcium they need, when they need it!
How Many Bags to Get:
One chicken consumes approximately 1 lb. per month.
Each chicken is different, so this will vary based on how much calcium they’re already getting in their diet. Observe your chickens’ eating behavior for the first month to see how much they eat, then you can plan accordingly.
A 5 lb bag is roughly a 1 month supply for a small backyard flock of 5 hens.
1 chicken? One bag should last ~5 months.
5 chickens? One bag should last ~1 month.
10 chickens? We recommend getting two bags, which should last ~1 month.