Chickens need about 1-2 teaspoons of grit per day to aid digestion, especially if they eat whole grains or forage for food.
Grit is a crucial part of a chicken’s digestive system. Without it, they can’t properly break down food. This guide covers everything you need to know about feeding grit to your flock.
What Is Chicken Grit?
Grit consists of small, hard particles like crushed granite or flint. Chickens swallow these tiny stones to help grind food in their gizzard since they lack teeth.
Types of Grit
- Digestive grit – Small stones for food breakdown
- Oyster shell grit – Provides calcium for eggshells
While oyster shell is sometimes called grit, it serves a different purpose. For more on calcium supplements, see our article on why chickens lay watery eggs.
How Much Grit Do Chickens Need?
Chickens typically need grit equal to 1-2% of their total diet. The exact amount depends on several factors:
| Factor | Effect on Grit Needs |
|---|---|
| Diet type | More needed for whole grains/treats |
| Free-range access | May find natural grit |
| Age | Chicks need finer grit |
Grit Requirements by Age
Baby Chicks (0-8 weeks)
Use chick grit – much finer than adult grit. Start offering at 1 week old if feeding anything besides starter crumbles.
Pullets (8-20 weeks)
Transition to regular grit size. Offer free-choice in separate container.
Laying Hens
Maintain constant access. Consider adding oyster shell for calcium. Learn more about when chickens start laying.
When to Provide Grit
Chickens need grit whenever they eat:
- Whole grains
- Kitchen scraps
- Grass or weeds
- Free-range forage
According to Backyard Chickens, commercial pellets may contain enough grit, but it’s safer to offer it free-choice.
How to Feed Grit
Best Methods
- Free-choice in separate container
- Mixed with feed (when first introducing)
- Scattered in run (encourages natural foraging)
Container Options
- Small feeder
- Shallow dish
- Hanging dispenser
For more chicken care tips, check our guide on introducing chickens to a new coop.
Signs Your Chickens Need More Grit
Watch for these symptoms of grit deficiency:
- Undigested food in droppings
- Weight loss
- Decreased appetite
- Lethargy
As noted by Omlet, chickens will naturally regulate their grit intake when given free access.
Grit vs. Oyster Shell
While both are important, they serve different purposes:
| Grit | Oyster Shell |
|---|---|
| Aids digestion | Provides calcium |
| Needed by all chickens | Only for laying hens |
| Can be natural stones | Specially processed |
Common Grit Questions
Can Chickens Overeat Grit?
No, they self-regulate intake based on need.
Do Free-Range Chickens Need Grit?
They may find natural grit, but offering supplemental grit ensures adequate supply.
How Long Does Grit Last?
Indefinitely when stored dry. Replace when contaminated or depleted.
Where to Buy Chicken Grit
Available at:
- Farm supply stores
- Feed stores
- Online retailers
- Some pet stores