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Not literally—at least not yet. The real story is a high-risk effort to engineer a dodo-like bird and restore the Mauritian habitat it would need. No living dodo exists, no release date has been announced, and the strongest public scientific advance so far is a pigeon reproductive-cell platform, not a dodo embryo.
No—the dodo is not back, and no one has announced a living dodo. What has changed is that researchers now have a more credible laboratory route toward making a dodo-like proxy: a bird engineered from a living relative to carry selected traits and potentially restore some lost ecological functions. Whether that ever becomes a healthy, socially viable population in restored Mauritian habitat is a far bigger—and still unanswered—question.
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The headline-making advance is not a dodo embryo. A September 2025 preprint reported long-term culture of primordial germ cells (PGCs) from the rock dove, also called the common pigeon. PGCs are the early cells that eventually produce sperm and eggs. Researchers reported that the cultured cells retained germline characteristics and could migrate to the developing gonads after being injected into rock-dove and chicken embryos. That is a meaningful platform for bird conservation and avian reproductive engineering. It is not proof that a dodo has been made, that Nicobar-pigeon cells have completed the same process, or that dodo development has been solved.
What “bringing back the dodo” currently means
The dodo, Raphus cucullatus, was a flightless bird found only on Mauritius. Its last confirmed sighting was in 1662; statistical work has estimated that the species may have survived unnoticed until around 1690. It disappeared after people and introduced animals transformed its island environment.
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Colossal Biosciences and the Mauritian Wildlife Foundation announced a partnership in November 2023. Their stated goals include laying groundwork for a potential dodo resurrection and rewilding effort while restoring critical Mauritian ecosystems through invasive-species removal, revegetation, and public awareness. They have also said the work may inform genetic rescue efforts for the endangered pink pigeon.
Those are plans, not a release approval or a promise of wild birds. The company has said it intends to work through the dodo’s closest living relative, the Nicobar pigeon, using reproductive cells and genome editing. In practical terms, the proposed route is likely to involve comparing what can be recovered from dodo DNA with the genomes of living pigeons, choosing variants thought to matter, editing cells from a living species, and finding a way to develop embryos and produce birds. Every link in that chain brings its own scientific and welfare challenges.
The pigeon-cell milestone: important, but early
PGCs matter because birds are not mammals. A mammalian cloning headline can make the process sound familiar, but avian reproduction presents different technical barriers. An egg is a complex developmental environment, and access to the cells that make eggs and sperm is a central challenge.
Long-term rock-dove PGC culture gives researchers a way to grow, examine, potentially edit, and transfer cells that are relevant to inheritance. The reported movement of those cells into embryo gonads is especially important: it suggests a path toward using host birds to produce donor-derived germ cells.
But the qualifiers are as important as the advance:
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- The published result was reported for rock-dove/common-pigeon cells, not dodo cells.
- It was a preprint, meaning it had not yet completed peer review at the time covered by this research.
- A cell platform is not a viable dodo-like embryo, hatchling, breeding population, or restoration program.
- Colossal’s stated work on editing Nicobar-pigeon PGCs and using surrogate chickens is a company-reported project status, not the same thing as an independently documented completed result.
That distinction is not an attempt to diminish the work. It is what makes the story interesting: scientists may be developing tools that could be useful for living endangered birds as well as ambitious proxy projects. The tool is real; the final animal remains hypothetical.
What the artificial-egg announcement did—and did not—show
In May 2026, Colossal announced that an artificial-egg system had hatched 26 chickens. The device is described as a silicone membrane held in a support cup, designed to manage gas exchange and moisture without a conventional shell. The company says this could help address a difficult issue for very large extinct birds, where a natural egg and a suitable surrogate may be poor matches.
It is fair to call this a company-reported proof of concept for shell-free avian incubation. It is not fair to call it a dodo revival result.
| What was reported | What cannot yet be concluded |
|---|---|
| Twenty-six chickens hatched in the company’s artificial-egg system. | A dodo, dodo-like bird, or other extinct species can be incubated this way. |
| The system may reduce a future egg-size or surrogate constraint. | It solves embryo development, genetics, health, behavior, or population management. |
| The company described the result publicly. | The result has been independently replicated or fully evaluated: no peer-reviewed paper, public dataset, or hatch rate across all attempts had been released at the time of the announcement. |
For readers, the useful mental model is simple: hatching chickens is a technical milestone worth watching, not a shortcut past the rest of the work.
A dodo-like proxy is not a time-travelled dodo
“Bring back” is understandable shorthand, but it can hide the central biological issue. The IUCN Species Survival Commission’s guidance uses the phrase creating proxies of extinct species: organisms intended to restore selected conservation-relevant traits or ecological functions. That language is more honest about what gene editing can and cannot do.
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Ancient DNA is fragmented and degraded. Even when researchers can sequence many pieces, not every part maps neatly onto a living relative’s genome. Missing or unmappable regions are not necessarily biologically trivial; they can include systems relevant to immunity, smell, and other functions. Then come the harder interpretive problems: which variants actually mattered, how genes were regulated during development, and how thousands of interacting genetic differences shaped a bird’s body and life history.
DNA is also not the whole animal. A convincing conservation outcome would have to account for health, microbiomes, disease resistance, learning, social behavior, welfare, reproduction, and interaction with a changed environment. Editing a limited set of sites may yield a bird with some dodo-associated traits. It cannot by itself recreate every biological and historical condition that made the original dodo a dodo.
The dire-wolf example explains why the wording matters
Colossal’s dire-wolf project is the clearest warning against treating a striking technical achievement as settled species resurrection. The company announced three animals born in 2024–2025 and described 20 edits across 14 genes in gray-wolf cells. The project demonstrates that selected trait edits and cloning can create living, genetically modified gray wolves with chosen characteristics.
It does not settle the claim that Aenocyon dirus, the extinct dire wolf, has returned. Researchers and independent scientists have challenged that description, noting that a gray wolf with selected edits is not an exact genetic, behavioral, ecological, or taxonomic replica of its extinct ancestor.
This matters beyond labels. If an animal is described as a restored species, people may assume it has known habitat needs, legal status, social requirements, and conservation value. A proxy requires those questions to be tested, not assumed.
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Other vanished species: where the projects actually stand
Colossal publicly lists six target projects: dodo, South Island giant moa, woolly mammoth, thylacine, dire wolf, and bluebuck. They are not a queue of animals about to return. Their maturity and scientific pathways differ sharply.
| Species | Current status described publicly | What to avoid claiming |
|---|---|---|
| South Island giant moa New Zealand |
An initiative with the Ngāi Tahu Research Centre and Peter Jackson was announced in July 2025. Early work was described as identifying usable DNA from bones and comparing it with living birds such as tinamou and emu, with Ngāi Tahu leadership central to the effort. | That moa are “next” or close to returning. |
| Bluebuck South Africa |
The bluebuck project was announced in April 2026. The bluebuck, Hippotragus leucophaeus, was a South African antelope that vanished around 1800. | That an animal has been recovered or that a reintroduction program exists. |
| Woolly mammoth Arctic/sub-Arctic context |
The proposed approach compares mammoth DNA with Asian-elephant genomes and seeks cold-adapted mammoth traits in the living relative. The company has publicly named late 2028 as a target for a birth. | That a mammoth embryo or calf exists, or that the company target is a reliable forecast. |
| Thylacine Tasmania/Australia |
An active project comparing preserved thylacine DNA with living marsupial genomes. The company’s own language about a “near-perfect” match indicates a reconstruction or proxy approach. | That a thylacine has been revived. |
| Dire wolf United States |
Three trait-engineered gray wolves have been announced. | That the existence of those animals proves a complete extinct species has been restored. |
The pattern is worth remembering: announced projects, a useful cell-culture platform, and even living engineered animals are different categories of evidence. None automatically proves that a vanished species has returned.
The real dodo test is Mauritius
If a dodo-like bird is ever produced, the laboratory will only have cleared the first gate. Its conservation value would depend on whether Mauritius can support it responsibly. That is why the partnership’s restoration commitments matter at least as much as its genetic ambitions.
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- Habitat: Which restored forest or coastal habitats could support the birds, and how do they differ from Mauritius before seventeenth-century extinctions?
- Invasive species: Rats, pigs, monkeys, predators, and disease threats are not historical footnotes. A credible plan needs durable control, not a one-time removal effort.
- Population health: A first hatchling would be a demonstration, not a population. Managers would need enough unrelated founders to avoid severe inbreeding and sustain breeding over generations.
- Animal welfare: Embryo editing, surrogate birds, hatch failures, hatchling care, and social development all require transparent monitoring and clear stopping rules.
- Ecological function: Claims about seed dispersal, browsing, or other roles need specific hypotheses and safeguards. Releasing an unfamiliar proxy without testing could create new harms.
- Governance and consent: Mauritian institutions and communities must have meaningful authority over decisions, alongside permits, public consultation, long-term financing, and accountability.
These are not obstacles added after the science. They are the conservation project. A bird that resembles a dodo but cannot thrive humanely, form a resilient population, or contribute positively in a restored ecosystem would not fulfill the strongest case for de-extinction.
How to follow future announcements without being misled
When a new de-extinction headline appears, ask four quick questions:
- What species and result are actually named? A chicken hatch, pigeon-cell experiment, edited cell line, embryo, first animal, and breeding population are very different milestones.
- Is the evidence independently available? Look for a peer-reviewed paper, methods, data, outside replication, and a denominator such as the number of attempts—not only the number of successful births.
- Is the animal an original species or a proxy? If it is made from a living relative, describe the relationship precisely rather than assuming identity.
- What is the habitat plan? A conservation claim should explain threats, welfare, governance, monitoring, and what would make release inappropriate.
That standard still leaves room for excitement. Better avian reproductive tools could aid endangered birds, and habitat restoration in Mauritius is valuable whether or not a dodo-like proxy ever exists. But the honest version of the story is more compelling than a countdown: researchers are testing whether advanced reproductive biology, careful restoration, and local stewardship can eventually produce a conservation benefit—not simply whether a famous extinct bird can be made to look alive again.
Further reading
For readers who want a broader, accessible introduction to ancient DNA, genome editing, feasibility, and ethics, Beth Shapiro’s How to Clone a Mammoth: The Science of De-Extinction is a directly relevant book. It should be read as background, not as validation of any company timeline or project claim.
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The dodo is not coming back yet. A pigeon-cell advance and a company-reported chicken-incubation result have made the proposed route more concrete, but a dodo-like proxy would still need to clear major genetic, developmental, welfare, ecological, and governance tests—especially in Mauritius.
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