This is the call of a meadowlark. (Sound of meadowlark plays). This is an upland sandpiper. And this excitable fellow is a burrowing owl. (Hooting sound of owl) What they have in common is that they are among more than 5,000 species of birds whose survival is threatened because of the expansion of industrial-style, modern agriculture around the world. Populations of meadowlarks, for example, have fallen by 71 percent since 1966. And it’s not just birds. Farming and development have reduced the population of all wild animals – mammals, birds, fish, and amphibians -- by more than half since 1970.