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Quiz estimate 142

From SibleyBirds

1. How many black birds?

ConcordMA IMG 7210 2015-10-21 w.JPG
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→ The actual number is 63. about 63 black birds

Image details: Common Grackle, Red-winged Blackbird, European Starling, Ring-billed Gull, Rock Pigeon, Canada Goose - Concord, Massachusetts. 10/21/2015. about 63 black birds. Image by David Sibley. link to image

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