The U.S. population has grown to about 7,000 pairs from a low of 487 in 1963, the service says. In Pennsylvania, there were 117 nesting pairs in 2006, up from two or three in the early 1970s, Gross said.
wow…
The U.S. population has grown to about 7,000 pairs from a low of 487 in 1963, the service says. In Pennsylvania, there were 117 nesting pairs in 2006, up from two or three in the early 1970s, Gross said.
wow…