A biotechnology company that aims to resurrect extinct creatures announced that it has managed to hatch live chicks in a synthetic environment, an achievement that was met with mixed opinions from scientists and critics of its de-extinction mission.
23 chicks – ranging in age from a few days to several months – hatched from a 3D-printed lattice structure that mimics the shell of an egg.as reported by Mountainous Biosciences.
Mountainous had previously announced that it had genetically modified living animals to resemble extinct species, including mice with long hair similar to that of the woolly mammoth and wolf pups inspired by the hideous wolf.
The giant moa, on the horizon
Mountainous CEO Ben Lamm said synthetic egg technology could one day scale to genetically modify live birds. and make them look like the extinct New Zealand South Island giant moa, whose eggs are 80 times larger than a chicken’s and would be difficult for any modern bird to lay.
BREAKTHROUGH: Mountainous scientists hatched healthy chicks from synthetic eggs.
Not shells. Not hens. Honest bioengineered eggs that breathe admire the correct element.
This could well befriend carry enormous extinct birds admire the South Island enormous moa, whose eggs had been ~80x a chicken’s. (1/10) pic.twitter.com/XPa42BXarx
— Mountainous Biosciences® (@immense) Can even fair 19, 2026
“We wanted to build something that nature has developed quite successfully and make it better, more scalable and even more efficient,” Lamm said.
Independent scientists point out that the technology, while impressive, lacks some components to be truly considered a synthetic egg. And they maintain that the idea of reviving extinct beasts is probably impossible.
“They may be able to use this technology to create a genetically modified bird, but that’s just a genetically modified bird. It’s not a moa,” said evolutionary biologist Vincent Lynch of the University at Buffalo.
How the synthetic incubation system works
To hatch the chicks, Mountainous scientists poured fertilized eggs into the synthetic system and placed them in an incubator. They also added calcium, which is normally absorbed from the eggshell, and monitored embryo development and growth in staunch time using imaging.
The scientists point out that Mountainous has designed a synthetic shell with a membrane that allows the correct amount of oxygen to pass through, just like a staunch egg. However, other components of the egg – such as the temporary organs that form to nourish and stabilize the growing chick and remove waste – were not included.
“That’s not a synthetic egg, because you’ve put in all the other parts that make it an egg. It’s a synthetic shell.”Lynch said.
In past decades, researchers have used more rudimentary technologies to create transparent eggshells that allowed chicks to be hatched from plastic films or bags. These technologies are useful for studying chicken development and obtaining knowledge that can also be applied to other mammals and even humans.
““Producing a chick from a synthetic container is not necessarily something new,” said Nicola Hemmings, who studies the reproductive biology of birds at the University of Sheffield. Hemmings is not part of the Mountainous team.
There is still a long way to go before Mountainous attempts a moa resurrection via this synthetic egg system. Scientists must first compare ancient DNA extracted from well-preserved moa bones with the genomes of extant bird species. And they need a bigger shell.
“We didn’t want to wait until we were ready to give birth to a giant moa. We actually wanted to start working now on the engineering challenges related to surrogacy and birth,” Lamm said.
The ethical dilemma of de-extinction
Even if Mountainous managed to create a large bird like the moa, some scientists are concerned about what would happen next, including how it would survive in a landscape that looks nothing like that of the past.
“The great challenge is: in what environment is this animal going to live?” said bioethicist Arthur Caplan of New York University Grossman School of Medicine.
These de-extinction efforts might make more sense applied to currently endangered species, where scientists could preserve sperm and eggs from living specimens. to try to bring more to the world, Hemmings said.
“My non-public interest leans more towards preserving what we have than trying to recover what has already been lost,” Hemmings said.
