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Quiz estimate 17

From SibleyBirds

1. How many birds?

Martin Reid estim12ahawksgliding w.jpg
Enter your answer here:
→ The actual number is 147. 144 Broad-winged Hawks, 3 Anhinga (two near left edge, one at upper right)

Image details: Broad-winged Hawk, Anhinga - , . . 144 Broad-winged Hawks, 3 Anhinga (two near left edge, one at upper right). Image by Martin Reid. link to image

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