April 11, 2015, Rio Blanco, Colombia — More than 1,600 birders visited Albeiro Uribe’s house here in Rio Blanco last year, and they just keep coming. Why? Because seven years ago, Albeiro figured out how to feed worms to antpittas. Albeiro is originally from this area, and told me this morning (with shotgun-mimicking gestures) that he used to hunt the birds on his property. But somewhere along the line, he got interested in birds beyond mere sport and acquired a field guide and binoculars. He realized that other people were interested in birds, too, especially antpittas, and started bringing birders to his house to show off the local species. Today, Albeiro has five antpittas staked out within a half mile of his back deck: Chestnut-crowned, Slate-crowned, Brown-banded, Bicolored, and Chestnut-naped. Jose Luna, Jeff, Dave, and I watched Albeiro feed worms to four of them today (the Bicolored preferred to call unseen from the bushes), and he spent the rest of the day birding...