How to Count Butterflies

How to Count Butterflies

Hunting for butterflies need not go the way of other childhood summertime idyls. With the animals in decline due to a panoply of factors, keeping track of their populations has become increasingly urgent. We recently covered a report that tracked 4.3 million butterfly observations across 90,000 volunteer hours over more than three decades—to reveal a striking pattern. Nautilus Members enjoy an ad-free experience. Log in or Join now . Which got …