Despite this intense competition, a few species—including some surprisingly common songbirds, hawks, sandpipers, and more—managed to evade discovery for years. Here, renowned bird expert and artist Kenn Kaufman explores this period in history from a new angle, by considering the birds these people discovered and, especially, the ones they missed. Kaufman has created portraits of the birds that Audubon never saw, attempting to paint them in that artist’s own stunning style, showing how our understanding of birds continues to gain clarity, even as some mysteries persist from Audubon’s time until ours.