WASHINGTON (AP) The dodo bird isnt coming back anytime soon. Nor is the woolly mammoth. But a company working on technologies to bring back extinct species has attracted more investors, while other scientists are skeptical such feats are possible or a good idea.

Colossal Biosciences first announced its ambitious plan to revive the woolly mammoth two years ago, and on Tuesday said it wanted to bring back the dodo bird, too.

The dodo is a symbol of man-made extinction, said Ben Lamm, a serial entrepreneur and co-founder and CEO of Colossal. The company has formed a division to focus on bird-related genetic technologies.

The last dodo, a flightless bird about the size of a turkey, was killed in 1681 on the Indian Ocean island of Mauritius.

The Dallas company, which launched in 2021, also announced Tuesday it had raised an additional $150 million in funding. To date, it has raised $225 million from wide-ranging investors that include United States Innovative Technology Fund, Breyer Capital and In-Q-Tel, the CIAs venture capital firm which invests in technology.