Mind boggling bat facts

I am a proud and long-time member of The Nature Conservancy.  It does wonderful work all around the world and has the reputation of a charity with a very high percentage of its revenue actually going to the work it does rather than to the people who run it.  Anyway, they publish a beautiful  bi-monthly magazine, which is always packed with interesting stories and facts.  Here is an amazing item that appears on page 19 of the February/March issue (my italics included for emphasis):

In October, the world's largest colony of bats got more protected space to roam at night. The Nature Conservancy, Bat Conservation International and the city of San Antonio paid $20 million for more the 1,500 acres adjacent to the Bracken Bat Cave, home to 15 million Mexican free-tailed bats.  The land, which had been slated for a 3,500 home subdivision, is directly in the flight path of the bats as they emerge from the cave each evening.  Bracken Cave's winged residents eat more than a quarter of a million pounds of insects each evening.  The Conservancy and  Bat Conservation International will own the property and incorporate it into nearby preserves.  

I'm still thinkin' those figures are misprints but they are not.  I'd hate to live in San Antonio if the bats all of a sudden disappeared.  I'd be contending with 250,000+ pounds of insects!