New research sheds light on why some birds have lost their penises over the course of evolution.
Land fowl, such as chickens, have normally developing penises as early embryos, but only have rudimentary organs as adults.
Fact‑first reporting that puts you at the heart of the newsroom. Subscribe for full access.
- Unlimited access to all premium content
- Uninterrupted ad-free browsing experience
- Mobile-optimized reading experience
- Weekly Newsletters
- MPesa, Airtel Money and Cards accepted