Hummingbirds take stab at rivals with dagger-tipped bills

Males reaching the age of competitive courtship grow a sharp weapon


WEAPONS  Hummingbird bills can turn into dagger-pointed weapons among long-billed hermits (shown in flight).

Chris Jimenez

This article is only available to Science News subscribers.

Subscribers, enter your e-mail address to access our archives.

Not a subscriber?

Science News is a nonprofit.

Support us by subscribing now.

More Stories from Science News on Life

From the Nature Index

Paid Content