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Original illustration of the Ploughshare Tortoise

Card 26 of 30

Ploughshare Tortoise

Astrochelys yniphora

Critically Endangered

So poached, conservationists engrave the shells.

Size
15–19 in shell · about 20 lbs
Lifespan
Matures at 15+ · generation ~42 years
Diet
Grasses, herbs & shrubs
Remaining↓
Fewer than 1,500 worldwide per Turtle Conservancy
The Ploughshare Tortoise in its habitat, an original illustration
Baly Bay, northwestern Madagascar

Where it lives

Baly Bay, northwestern Madagascar

Ranges stay general on purpose. Witness never publishes a location that could help someone find an animal already under pressure.

See it on the map

What threatens it

  • Pet-trade poaching
  • Status-symbol demand
  • Habitat burning
  • Trafficking routes

Life cycle

One to six eggs per clutch — three on average — in up to four clutches between January and May. About half hatch, and a hatchling will not breed for at least fifteen years.

Field study of the Ploughshare Tortoise, an original illustration
Field study · Ploughshare Tortoise
The Ploughshare Tortoise observed in the field, an original illustration
Field observation

Field notes

Every passage carries the number of the source it came from. Nothing here is written from memory.

The ploughshare tortoise carries a high golden dome of a shell, named for the plough-shaped horn that juts forward beneath its chin.Source 1Source 2

It survives nowhere but the dry bamboo-scrub of Baly Bay, northwestern Madagascar — a wild range of perhaps sixty square kilometers.Source 1Source 3

The shell that makes it beautiful made it a target: prized on the black market, owned as a status symbol.Source 4Source 2

Between 2002 and 2016, 334 ploughshare tortoises were seized from traffickers.Source 5

The wild population fell to a few hundred, then fewer; the Turtle Survival Alliance now presumes the species functionally extinct in the wild.Source 5Source 6

The defenses are extraordinary: conservationists engrave identification numbers into the shells to discourage poachers, and the breeding center works under armed guard.Source 4Source 1

That breeding center matters because Durrell cracked the code: the first captive breeding of the species, begun as Project Angonoka in 1986.Source 1

Over 800 captive-bred tortoises now live at Ampijoroa, and 105 have gone back to the wild.Source 7

Everything about the species is slow — maturity at fifteen years, three eggs to a clutch — so every tortoise counts.Source 3

To witness the ploughshare is to insist that a shell's beauty belong to the animal wearing it.Source 4

The Ploughshare Tortoise drawn to scale beside a human figure
Scale study · beside a human figure

Did you know

In 2025, tortoises rescued from smugglers back in 2010 produced 25 hatchlings in California — the first breeding success outside Madagascar.

This week’s act · for the Ploughshare Tortoise

Meet the golden tortoise

Read the Turtle Conservancy's program page: the black-market pressure, the engraved shells, and the assurance colonies.

with Turtle Conservancy

4 minutes · Worldwide · verified 25 August 2026

Witness records that this door was opened. It never claims the outcome.

Help & protection

  • Durrell Wildlife Conservation Trust

    Project Angonoka

    The program that first bred the species, running the guarded Ampijoroa center — over 800 tortoises bred and 105 released.

    View initiative ↗Verified 25 August 2026
  • Turtle Conservancy

    Ploughshare program

    Runs an assurance colony in California, fights trafficking, and partners with Durrell in Madagascar.

    View initiative ↗Verified 25 August 2026

Sources & verification

Status
Critically Endangered
Range (generalized)
Baly Bay, northwestern Madagascar
Fact-checked
25 August 2026
Location review
generalized
Artwork
AI-assisted stylized illustration
  1. Durrell Wildlife Conservation Trust

    Ploughshare tortoise

    Open source ↗Last accessed 25 August 2026
  2. Turtle Survival Alliance

    Turtle of the Week: Ploughshare Tortoise

    Open source ↗Last accessed 25 August 2026
  3. Chelonian Research Foundation

    Astrochelys yniphora assessment (Chelonian Research Monographs 6)

    Open source ↗Last accessed 25 August 2026
  4. Turtle Conservancy

    Ploughshare Tortoise

    Open source ↗Last accessed 25 August 2026
  5. Durrell Wildlife Conservation Trust

    Illegal pet trade driving the ploughshare tortoise to extinction

    Open source ↗Last accessed 25 August 2026
  6. Turtle Survival Alliance

    Ploughshare Tortoise

    Open source ↗Last accessed 25 August 2026
  7. Durrell Wildlife Conservation Trust

    Ploughshare tortoises at Jersey Zoo

    Open source ↗Last accessed 25 August 2026
  8. Turtle Conservancy

    Saving Madagascar's Ploughshare Tortoise

    Open source ↗Last accessed 25 August 2026

Record last fact-checked 25 August 2026. The illustrations are original, drawn for Witness; they are not photographs.

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