Scientists hatch live chicks using artificial eggs, advancing de-extinction efforts.

Urgent breakthroughs in de-extinction technology are now underway, with scientists successfully hatching live chicks from fully artificial eggs. This pivotal moment paves the way for resurrecting long-dead species and marks a critical step forward for Colossal Biosciences, the company dedicated to bringing back the woolly mammoth and the South Island giant moa.

The team has developed the world's first shell-less incubation system designed to mimic natural egg conditions as closely as possible. By transferring early bird embryos into this artificial shell, researchers incubated them for 18 days until they developed fully. Upon reaching maturity, the chicks hatched from their protective environment and are now thriving as healthy, happy animals.

"This device changes everything. We're showing the world that we can grow this whole bird in an incubator outside of an eggshell," Colossal Biosciences stated. "It's a complete game-changer. Life finds a way."

The artificial egg is engineered with a 3D-printed outer shell structured like a lattice to ensure protection and rigidity. Inside, a specialized silicone-based membrane allows oxygen to diffuse naturally from the atmosphere, mirroring how microscopic pores in real eggshells facilitate gas exchange. This design solves a core engineering challenge that plagued previous attempts over the last 40 years, where the need to supplement eggs with large volumes of pure oxygen caused DNA damage and compromised animal health.

"The permeable membrane of this new design allows oxygen to naturally transfer from the atmosphere into the egg," experts explained. "How do we replicate nature but also improve upon it? This is the first time the core engineering problem of artificial eggs has been solved."

A key feature of this innovation is a window on the top of the device, granting real-time visibility into every stage of embryonic development. The system is compatible with standard commercial incubators, can be manufactured at scale, and is adaptable to eggs of any size.

This breakthrough serves as a vital stepping stone for the eventual development of an artificial womb and is essential for the company's ambitious plans to de-extinct the South Island giant moa. Standing at 11.8 feet (3.6 metres) tall and weighing 507lbs (230kg), this enormous bird represents one of the most significant targets for restoration.

The process began with the collection of real chicken eggs immediately after they were laid. An embryology team carefully examined each specimen, selecting the embryos most likely to hatch. They then gently cracked the shells and transferred the contents into the artificial egg, which was subsequently placed in an incubator. Scientists also applied a specific nutrient to support the embryo's continued development.

As these technologies advance, the potential impact on communities and conservation efforts becomes increasingly clear. The ability to grow birds in artificial shells without the risks associated with traditional oxygen supplementation offers a safer, more reliable path for bringing extinct species back to life. However, it also raises profound questions about the risks and responsibilities involved in altering the natural order.

"We're showing the world that we can grow this whole bird in an incubator outside of an eggshell," the company emphasized, underscoring the magnitude of this achievement. With the first artificial eggs now proven viable, the door is opening wide for a future where lost species may once again walk the Earth.

Eighteen days after the initial attempt, a chick began tapping its eggshell, signaling readiness to hatch. Researchers immediately grouped all hatched chicks and moved them to an outdoor graduation pen. Eventually, the birds transitioned to a large commercial farm facility.

Colossal Biosciences claims this technology could save endangered species as over half of all bird populations face decline. The company envisions a future where laboratories incubate hundreds of critically endangered eggs. They describe these efforts as essential stepping stones toward building a fully functional artificial womb.

The device features a 3D-printed outer shell with a rigid lattice structure for maximum protection. This design fits standard incubators and scales easily to accommodate eggs of any size. The team notes this specific setup solved a unique challenge for the South Island giant moa project.

Moa eggs were roughly 80 times larger than a chicken egg and eight times larger than an emu egg. No living bird can serve as a surrogate host for such massive volumes. Consequently, a scaled artificial egg becomes critical for bringing back this extinct species.

Colossal plans to extract DNA from moa bones to engineer modern birds resembling the original. These ancient creatures vanished from New Zealand between 500 and 600 years ago. Scientists will use this same technique previously applied to transform grey wolves into dire wolf replicas.

Edited embryos will develop inside the artificial egg before hatching. Professor Andrew Pask, chief biology officer, called the system a novel, scalable, and biologically accurate platform. He stated that the genome provides a blueprint, but without a construction site, the plan remains meaningless. The artificial egg offers that controlled, independent foundation.

This milestone supports efforts to de-extinct the South Island giant moa, a towering 3.6-meter bird weighing 230kg. The species died out in the 15th century due to hunting and deforestation by early Māori settlers. Restoring this megafauna aims to heal New Zealand's damaged ecosystems.

However, some external experts warn that no published scientific paper accompanies this announcement. This lack of documentation limits current scientific scrutiny of the project's claims.

Critics hailed the advance as an impressive feat of bioengineering.

Carles Lalueza-Fox, director of the Museum of Natural Sciences of Barcelona, called it a unique achievement with no comparable precedents.

"The most significant breakthrough lies in the permeability of the membrane," he stated. "This allows gases like oxygen and carbon dioxide to pass through."

He noted the device could also help de-extinct other birds, such as the Carolina parakeet.

Dusko Ilic, a Professor of Stem Cell Sciences at King's College London, offered a more cautious perspective.

"Recreating an extinct species such as the moa would require far more than an incubation platform," Ilic explained.

He emphasized the need for accurate genome reconstruction, appropriate development, physiology, behavior, welfare, and an ecological context.

"Even then, the result would likely be an engineered proxy rather than a true restoration of the extinct species," he warned.

Ilic argued the most credible value lies in embryo rescue and endangered bird conservation.

These applications depend on the technology proving reproducible, scalable, and compatible with normal long-term health.