Birders across New Jersey are kicking off a high-stakes, 24-hour species marathon during the 43rd Annual World Series of Birding, igniting a fierce competition to identify the most bird species in one day. This signature event takes place on Saturday, May 9, hitting peak spring migration to maximize chances of spotting rare and elusive birds — rain or shine.
The race starts in the dead of night for top teams, who brave the darkness from midnight onward. While many birdwatchers begin at dawn, only the most determined dive into the pre-dawn hours to identify night-active species like owls. New Jersey’s southern regions, especially Cape May County, offer prime habitat for nocturnal species such as the Great Horned Owl, Barred Owl, Barn Owl, and Eastern Screech Owl.
Dan Poalillo, a veteran birder, highlights the challenge and thrill of identifying owls by their distinct calls — from the haunting “hoo-hoo” of the Great Horned to the rhythmic “Who cooks for you? Who cooks for you-all” melody of the Barred Owl. These night calls are vital as most owls remain hidden during the day.
Besides owls, expert birders listen for the faint nocturnal “peep” calls of migrating songbirds traveling under cover of darkness to avoid daytime predators. Species like the Eastern Whip-poor-will and rare rails such as the King, Yellow, and Black rails add to the secretive night chorus. As dawn breaks, teams tune in for the Chuck-will’s-widow and the explosive morning chorus signaling the start of peak songbird activity.
By 9:00 am, teams typically document over half of their day’s species, then spend the remaining 15 hours seeking marsh birds like egrets, herons, and ducks, along with sea birds including gulls, terns, and gannets. Raptors and other “fly-by” species require sharp eyes to catch as they soar overhead. Patience and stamina are key — some birders grab brief rests during a mid-afternoon lull before heading out again.
In total, more than 85 teams have registered for this year’s event, drawing participants from across the country who converge on New Jersey to push their limits and contribute to conservation. The World Series of Birding functions as New Jersey Audubon’s largest fundraiser, with proceeds supporting local wildlife programs and dozens of other conservation groups that raise money alongside New Jersey Audubon.
The event has evolved to welcome all skill and commitment levels. Not everyone tackles the full 24 hours or the entire state. Some birders focus on their home counties, participate with carbon-free efforts, or opt for “Big Stay” strategies — patiently waiting for birds at one location. New Jersey Audubon Ambassador teams can compete with no entry fees, bird at their own pace, raise funds, and most importantly, have fun hunting down every bird possible.
As the clock ticks down to the big kickoff at midnight on May 9, excitement is palpable. Birding aficionados prepare gear and review routes while warming up ears for the unique night sounds that launch the Big Day adventure. Whether tracking elusive nocturnal owls, decoding the mysterious calls of migratory songbirds, or spotting majestic raptors slicing the blue sky, the World Series of Birding is an adrenaline-fueled celebration of nature’s spring spectacle — proving birdwatching is far from a quiet pastime.
Visit www.njaudubon.org to support teams, donate, or learn how to join the action in this legendary birding showdown.
