Quiz estimate 5

From SibleyBirds

1. How many eiders?

SandyNeckBarnstableMA IMG 3124 2014-10-23 w.JPG
Enter your answer here:
→ The actual number is 18.

Image details: Common Eider, Northern Gannet, - Barnstable, Massachusetts. 2014/10/23. 18 eiders, one gannet. Image by David Sibley. link to image

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