When to Switch from Starter Feed to Grower Feed
Ah, the joys of raising baby chicks! One minute, they’re adorable puffballs peeping sweet nothings, and the next, they’re awkward, feathered teenagers chest-bumping like they just joined a poultry wrestling league. Somewhere between “Aww!” and “Is that a comb coming in?” lies one very important transition: switching your chicks from starter feed to grower feed.
If you’re wondering when to make the change—and how to avoid a mutiny in the brooder—cluck no further. Here’s your start-to-finish guide to making the switch, without ruffling too many feathers.
Step One: Meet the Starter Feed
Starter feed is basically chick protein powder. Packed with 18–20% protein, it gives those babies the energy to grow strong bones, fluff out some feathers, and practice their early ninja moves (usually at 3 a.m.).
You start chicks on this high-octane feed from Day One—no exceptions. They need it to build immune systems, muscle, and sass.
Feed Duration: Day 1 to about 6 weeks old
Step Two: Know When They’re Ready for the Big Switch
The big question: When do I switch to grower feed? The magic number is usually 6 to 8 weeks old, but it’s less about a wall calendar and more about how they look and act.
Here’s what to watch for:
- Their fluff is gone—replaced by gangly juvenile feathers
- They’re sprouting combs and waddles like teen stubble
- They’re acting bold, brave, and possibly too cool for your cuddles
- They’ve outgrown the brooder like teenagers outgrowing shoes
If your chicks are fully feathered, eating like there’s no tomorrow, and looking more chicken than chick, it’s Grower Feed Time.
Step Three: Meet the Grower Feed
Grower feed has less protein (typically 15–17%) and a better balance. It’s designed for the not-quite-adult but no-longer-a-baby stage—kind of like middle school, but with more pecking.
It supports healthy bone growth without pushing too-fast weight gain, which is important for preventing leg problems in heavy breeds and general awkwardness in all breeds.
Feed Duration: 6–8 weeks until around 16–18 weeks old (aka "Point-of-Lay")
Step Four: Make the Transition as Smooth as a Fresh Egg
Don’t yank their food away like a bad diet plan. Chicks—like people—prefer a gradual transition. Here’s how to do it:
- Day 1–2: Mix 75% starter feed with 25% grower feed
- Day 3–4: Go 50/50
- Day 5–6: Move to 25% starter, 75% grower
- Day 7: Full grower feed
Doing it over a week prevents digestive drama and ensures no one goes on a hunger strike.

Don’t Jump to Layer Feed Just Yet
You may be tempted to give your 10-week-old precocious pullets layer feed “because they’re acting all grown up.” Don’t do it. Layer feed has added calcium meant for egg production—giving it too early can harm kidneys and stunt growth.
Stick with grower feed until your girls lay their first egg (usually 16–20 weeks, depending on breed). Then and only then can you break out the calcium-rich stuff like it’s champagne at a retirement party.
Bonus Round: What About Roosters?
If you’ve got boys in the flock (intentional or surprise), grower feed is their forever feed. They don’t need the calcium in layer feed either. Just provide crushed oyster shell in a separate dish once your girls start laying so hens can self-serve what they need.
Other Tips While We’re Here:
- Fresh Water Always: Chickens are messy little creatures. Change it daily and keep it clean.
- No Treats Until 2 Weeks Old: After that, only sparingly—think of them as snacks, not a buffet.
- Grit Matters: If you give treats, be sure your chicks have access to chick grit to help them digest it.
Changing from starter to grower feed is like upgrading your chicks from juice boxes to protein shakes. It’s a key milestone that says: Hey kid, you’re growing up... feather by feather. Just time it right, ease the transition, and let nature do its clucking magic.
Soon enough, you’ll be switching feeds again—and collecting eggs like a proud chicken parent who made it through the fluff, the flaps, and the flutters.