OVERRIDE

Bertel Bruun

Bertel Bruun contributed to nature guides from Golden Guides and St. Martin's Press.

BOOKS BY THE AUTHOR

Spot the silhouette of a Northern Goshawk in flight. Identify the raucous call of the Red-winged Blackbird. Discover the secret of picking out a Chipping Sparrow from its look-alike cousins. It's...

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