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Animal Milk

What is pigeon milk and how is it produced?

Quick answer

Pigeon milk (crop milk) is a nutrient-rich substance that pigeons make in the crop, a food-storage pouch in the throat. A study hosted by the U.S. National Library of Medicine says the crop lining thickens under the hormone prolactin and sheds cells that form the milk, starting about two days before eggs hatch. It is not mammal milk, and we found no official source on people drinking it.

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In this article
  1. How is pigeon milk produced?
  2. Do pigeons make milk like mammals?
  3. When does it start, and who makes it?
  4. What is in pigeon milk?
  5. Can you buy, milk or drink pigeon milk?
  6. How does it taste?

How is pigeon milk produced?

Pigeons make it in the crop, a pouch in the digestive tract that normally stores food. The researchers describe a “hyperplastic response” in the crop lining: the tissue grows and folds, and its cells fill with fat before they are shed. Those shed cells are the “milk.”

Do pigeons make milk like mammals?

Not in the mammal sense, since it does not come from mammary glands. It does share one trigger with mammal lactation: the crop responds to prolactin, the lactation hormone. The study notes that the exact mechanism is still unknown.

When does it start, and who makes it?

Production begins about two days before the first egg hatches. The study states that both male and female pigeons can produce it, although it sampled only females.

What is in pigeon milk?

The study reports dry matter that is about 60% protein and mostly fat (32 to 36%), with 1 to 3% carbohydrate. It also lists minerals such as calcium, potassium, sodium and phosphorus, and IgA antibodies.

Can you buy, milk or drink pigeon milk?

The source we read does not address it, and we found no official source that describes pigeon milk as a food for people. It is made in small amounts for the chicks and is not sold as a drink.

How does it taste?

We found no official source that describes the taste, so we do not give one.

People also ask

What is pigeon milk?

A fat- and protein-rich substance made in the crop of pigeons to feed their chicks. It is made of shed crop-lining cells, not produced by mammary glands.

Do pigeons really make milk?

Yes, a milk-like food called crop milk. Both male and female pigeons can make it, and the hormone prolactin drives it, per the study we read.

Can you drink pigeon milk?

We found no official source that says people can or should drink it. It is made for the chicks.

General information only, not medical advice. If you have a health condition or are pregnant, ask your doctor before changing what you drink.

Sources

  1. U.S. National Library of Medicine (PMC): Pigeon crop milk study, read 5 Nov 2026
Written by Drinks Type Editorial Team · Published Jun 26, 2025 · Updated Nov 5, 2026
About · How we verify this · Editorial policy · Corrections

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