Scientists: Evidence of two endangered bat types may expand protections
By Dan Nakaso
June 19, 2015
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COURTESY FRANK J. BONACCORSO / U.S. GEOLOGICAL SURVEY Hawaiian Hoary Bat: The endangered Hawaiian hoary bat (above) migrated from the mainland 10,000 years ago and over time became smaller and darker than its North American cousin. The average weight of an adult male is 0.5 ounce, and the female is 0.6 ounce. Its wingspan is 10.5 inches.
COURTESY PAUL CRYAN / U.S. GEOLOGICAL SURVEY North American Hoary Bat: The North American bat is typically grayish brown with heavy, “frosty” tipped fur. The average adult bat weighs 1 ounce, and its wingspan can reach up to 17 inches.