With an itinerary covering 41 countries, spanning all seven continents, and armed with a backpack, binoculars, and a series of one-way tickets, he sets out on the greatest adventure in the birding world. Along the way he meets a colorful cast of fellow birders—and discovers a world of blood-sucking leeches, chronic sleep deprivation, floods, war zones, ecologic devastation, and conservation triumphs.

When Arjan Dwarshuis first heard of the “Big Year”—the legendary record for birdwatching—he was twenty years old, it was midnight, and he was sitting on the roof of a truck in the Andean Mountains. In that moment he promised himself that, someday, somehow, he would become a world-record-holding birder. Ten years later, he embarked on an incredible, arduous, and perilous journey that took him around the globe; over uninhabited islands, through dense unforgiving rainforests, across snowy mountain peaks and unrelenting deserts—in just a single year.

Victor Emanuel is widely considered one of America's leading birders. In One More Warbler, Emanuel recalls a lifetime of birding adventures - from his childhood sighting of a male Cardinal that ignited his passion for birds to a once-in-a-lifetime journey to Asia to observe all eight species of cranes of that continent. He tells fascinating stories of meeting his mentors who taught him about birds, nature, and conservation, and later, his close circle of friends who he frequently birded and traveled with around the world.

Christian Cooper is a self-described “Blerd” (Black nerd), an avid comics fan and expert birder who devotes every spring to gazing upon the migratory birds that stop to rest in Central Park, just a subway ride away from where he lives in New York City. While in the park one morning in May 2020, Cooper was engaged in the birdwatching ritual that had been a part of his life since he was ten years old when what might have been a routine encounter with a dog walker exploded age-oldracial tensions. Cooper’s viral video of the incident would send shock waves through the nation.

When the birds first called, Susan Fox Rogers was in a slack season of her life. The woods and rivers that enthralled her younger self had lost some of their luster. It was the song of a thrush that reawakened Rogers, sparking a long-held desire to know the birds that accompanied her as she rock climbed and paddled, to know the world around her with greater depth. Energized by her curiosity, she followed the birds as they drew her deeper into her authentic self, and ultimately into love.