Audubon turned the Christmas hunt into a bird count

By 1900, American bird populations were visibly declining, and conservationists inside the young Audubon movement were alarmed by one specific, popular ritual that made things worse every winter: the Christmas Side Hunt, in which teams of hunters chose sides and competed on Christmas Day to bring in the biggest pile of feathered and furred kills.

Frank M. Chapman, an ornithologist and early Audubon officer, proposed keeping the day, the teams, and the competitive structure entirely intact, and changing only what counted as a win. Instead of a pile of carcasses, participants would tally species and numbers spotted alive — a Christmas Bird Census rather than a Side Hunt, played on the same date with the same appetite for a shared outdoor contest.

Kept the hunt's date and competitive teams, but swapped the target from shot birds to counted ones, turning a destructive tradition into a century-long dataset.

Preserving the familiar format made adoption effortless.

The competitive tally kept participants engaged.

No new infrastructure was needed, only a different score.

The event's scale compounded into a massive dataset.

To stop a harmful ritual, don't cancel it—keep its structure and swap the scoring rule; the existing enthusiasm transfers.

27 birders held 25 counts in 1900; the count still runs every December, now with tens of thousands of volunteers across the Americas. The century-plus, volunteer-collected dataset became a core scientific record of North American bird population trends, feeding federal and academic conservation reports and, more recently, EPA climate-change indicators, all sourced from an activity that costs the organizing societies almost nothing to run.