A species of huge, flightless bird that once inhabited New Zealand disappeared around 600 years ago, shortly after human settlers first arrived on the country’s two main islands. Now, a Texas-based biotech company says it has a plan to bring it back.

After a controversial project claiming to have resurrected the dire wolf, Colossal Biosciences has now announced plans to bring back nine species of the extinct moa bird

Unlike other large flightless birds which still retain vestigial wings, moa were completely wingless. They took about 10 years to reach maturity and laid one egg at a time. That egg was especially thin and fragile, which is where the smaller males came in handy. Scientists suspect males incubated the eggs to lower the risk of breakage.