By Kip Hansen – Re-Blogged From WUWT
The marvelous Monarch Butterfly is an icon of biological mystery. When I was born, circa 1950, monarchs were known to fly north into southern Texas every spring by the millions. In the Fall, tourists would go to Cape May, New Jersey, timing their visits to watch the beauty and pageantry of the Monarch Migration south again as they are funneled down the southern New Jersey peninsula from New England and points north, headed south to an unknown destination, believed to be somewhere in Mexico.
It wasn’t until 1975, long after I had passed through university, that the location of the monarch overwintering site in the central mountains of Mexico was discovered. For 40 years, Dr. Fred Urquhart had searched for the monarch’s overwintering site…finally discovering the location in the fall of 1975. Urquhart wrote of his discovery in National Geographic magazine, which had funded his search, in the August 1976 issue. He did not, however, reveal the actual location of the butterfly colonies at that time, not even to other scientists.