Small Pet Select Oyster Shell Calcium Poultry Supplement, 5-lb box

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About This Item

Details

  • Crushed oyster shells are a great source of supplemental calcium for laying hens, providing extra when they need it most.
  • Helps increase the strength of eggshells and the quality of your hens’ eggs.
  • Promotes healthy plumage in chickens, ducks or other waterfowl.
  • The thinner shells are ideal for feeding alone or mixing into your hens’ feed.
  • Made from 100 percent, all-natural and GMO-free flaked crushed oyster shells.

Ingredient Information

Feeding Instructions

Frequently bought together

Questions & Answers

4 Customer Questions

are these oyster shells manufactured in the US?? Thanks.

Answer by Chewy • Sep 09, 2020
This is made in the USA.

Can I give this to finches, diamond doves, and button quails?

Answer by Chewy • Apr 26, 2021
This supplement is suitable for hens, ducks, and mixed fowl.

How much should we mix in with grower feed to supplement/mimic the calcium level in layer feed? We accidentally ordered the wrong feed and want to amend it.

Answer by Chewy • Sep 25, 2020
Please see the attached instructions for this supplement below.

Hi, can I use this for ducks as well? Thanks

Answer by Chewy • Apr 07, 2021
This promotes healthy plumage in chickens, ducks or other waterfowl.
Reviews
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4.4
Rated 4.4 out of 5 stars
283 Ratings
Terms & Conditions

116 Customer Reviews

Rated 4 out of 5 stars
By Adriana on Jan 21, 2026

Packaging needs improvement

Great product itself- my hens seem to love it! However, it wasn’t shipped protectively and a lot of the product spilled out. The box was also sort of taped shut

Great product itself- my hens seem to love it! However, it wasn’t shipped protectively and a lot of the product spilled out. The box was also sort of taped shut. Otherwise it was a good buy. Hopefully they will improve with packaging methods

Rated 5 out of 5 stars
By Jennifer on Nov 27, 2025

Chickens Prefer It

I’ve used oyster shell for years and my chickens would barely ever use it. I just assumed they must not need it. But after switching to this flake oyster shell,

I’ve used oyster shell for years and my chickens would barely ever use it. I just assumed they must not need it. But after switching to this flake oyster shell, they eat some every day. It appears that they like the flaky type more than the rough nugget type.

Rated 5 out of 5 stars
By Diane on Sep 30, 2025

Hens actually eat it!

The nugget type oyster shell sat in the pan and my hens shells were getting rather thin. I thought I’d try this. I’m on my 3rd or 4th box now. Yes it costs more

The nugget type oyster shell sat in the pan and my hens shells were getting rather thin. I thought I’d try this. I’m on my 3rd or 4th box now. Yes it costs more per pound, but if your chickens don’t eat the cheap nugget what’s the point in buying it? I’ll keep getting this product. They pick it out of the nuggets in the same pan. Ive even put the flakes on one side and the cheap nuggets on the other to see if I was getting it right and they definitely go for the flakes. Very good product.

Rated 5 out of 5 stars
By la on Nov 15, 2025

Hard to find

Flaked shell is difficult to find. My girls will only eat the flaked shell. Tho, I wish the packaging was better and secure for less leaking and product loss.

Flaked shell is difficult to find. My girls will only eat the flaked shell. Tho, I wish the packaging was better and secure for less leaking and product loss.

Rated 5 out of 5 stars
By Pete on Sep 5, 2025

It's real

This is real oyster shell, don't make the mistake of buying the stuff called Coral Calcium that is sometimes stated to be oyster shell. Trust me it's not the same

This is real oyster shell, don't make the mistake of buying the stuff called Coral Calcium that is sometimes stated to be oyster shell. Trust me it's not the same and the chickens will know the difference, they won't touch that stuff.

Rated 5 out of 5 stars
By PAMELA on Dec 3, 2025

Awesome!

My Chickens LOVED this and with the high protein they started laying again! Thank you!

My Chickens LOVED this and with the high protein they started laying again! Thank you!

Rated 1 out of 5 stars
By JEANETTE on Jul 1, 2025

CHEWY & DIRECTIONS

I have specific needs for delivery. I am 100% Disabled. I have instructed Chewy not to make packages over 30# and to deliver to front door in the wagon. They

I have specific needs for delivery. I am 100% Disabled. I have instructed Chewy not to make packages over 30# and to deliver to front door in the wagon. They continually make packages over 40# and leave my packages in front of my garage door (in the rain)! No one wants to do their job!

Rated 4 out of 5 stars
By Ashley on Dec 5, 2025

Not as thick as others but

Still pretty chunky and the birds aren't going for it.

Still pretty chunky and the birds aren't going for it.

Rated 5 out of 5 stars
By Emily on Jun 26, 2025

A little Chunky but Good Deal

I know this contained flaked shells besides just oyster shells, however, the chunks were still bigger than I expected. For the price though it can’t be beat. I always

I know this contained flaked shells besides just oyster shells, however, the chunks were still bigger than I expected. For the price though it can’t be beat. I always chose small pet select for my flocks calcium needs

Rated 5 out of 5 stars
By Linda on Sep 13, 2025

Oyster Shell

My Chickens live this stuff, so they eat it. They hate the Granular kind, and won't eat it.

My Chickens live this stuff, so they eat it. They hate the Granular kind, and won't eat it.