.dropcap { color: #838078; float: left; font-size: 82px; line-height: 60px; padding: 5px 8px 0 0; } One evening last week, before heading home, Jay Bolden stopped at an oasis of green in the industrialized neighborhood of Indianapolis where he works. It was drizzling, but he quickly swapped his work shoes for hiking boots, grabbed his binoculars and scope, and headed toward the woods where the rush of spring migration resounded. Listening intently, he soon spied his first Orchard Oriole of the season, and his second Black-throated Green Warbler. (He’d seen the first that morning with his seven-year-old daughter.) His eyes glued to his binoculars, Bolden, a senior biologist at the pharmaceutical giant Eli Lilly, delighted in every warbler, sparrow, and thrush he found. Confidently reeling off the birds, he’s at the same time a bit bemused that in only one week, he, an admitted introvert, would travel across the country to Cape May, New Jersey, to make a major...