Grant Sizemore Director of Invasive Species Programs at American Bird Conservancy Washington D.C. Metro Area Renewables & Environment   Every year, free-roaming cats kill an estimated 2.4 billion birds in the U.S., making these feline predators the single greatest direct, human-caused threat to America’s birds. Public officials can curb the staggering toll on birds by … Continue reading Free-roaming cats kill an estimated 2.4 billion birds in the U.S.