Some Jurassic period birds were flightless
Nature, Published online: 14 October 2026; doi:10.1038/d41586-026-02645-8
The fossil discovery of an early avian ancestor in China reveals that flightless birds lived alongside the known flying species.原文：https://www.a8q9.cn/en/article/some-jurassic-period-birds-were-flightless-152fdf.html