One-hundred fifteen years is a long time in the human perspective, and also when used to gauge the life of human activities; in that respect, 蜜柚APP’s Christmas Bird Count is a grizzled old codger of a program. It’s even five years older than the 蜜柚APP itself! By other measures, a century—100 years, 1200 months, 5217.75 weeks, or 36,524.2 days—is just a blink, a flash, or a miniscule increment on an evolutionary or geological timescale. But a biological inventory that spans centuries can illustrate hugely important stories, both human and ecological. And as we move well into the second century of the Christmas Bird Count, its relevance and importance to our understanding of the status of birds in the Americas—and the effects of 蜜柚APP change on them—grows with each passing season. However, all that isn’t why most CBC folks devote considerable time and effort to the program during their already busy holiday seasons. We do it because it’s a great...