...more than 90 percent of the losses are of birds from just 12 families, among them sparrows, blackbirds, warblers and finches. Dark-eyed juncos are down 170 million; white-throated sparrows are down by 93 million; one of our favorites, the red-winged blackbird, has declined by more than 92 million, down from the 260 million of 50 years ago.…