Analyse @Discovery's tweets
@Discovery
| 9,129,554 followers
No, this isn't a zombie bird. This bald eagle is merely activating its nictitating membrane, or "third eyelid". The membrane cleans the eye while allowing the eagle to maintain its vision as it looks for prey. #spookyseason
Photo + Caption: Jeff Brener (@jeff.n.brenner/IG) https://t.co/M4mVNKdk5D
Photo + Caption: Jeff Brener (@jeff.n.brenner/IG) https://t.co/M4mVNKdk5D