Ivory Billed Woodpecker, Campephilus principalis. This was once the largest woodpecker in North America, becoming extinct around 1944. Their previous range was in the forests and swamps of the southeast. There has been much debate about whether or not it is actually extinct. It was thought that they went extinct in the 1920s but then a few were spotted later, and subsequently killed. The last accepted sighting of them was in 1944, with no clear evidence of their continued existence despite hunters and birders on the look-out. Their decline was due to deforestation and over-hunting. A subspecies, the Cuban Ivory Billed Woodpecker, is also extinct, last seen around 1990. There was a potential re-sighting in 2021 but the evidence is not clear and not likely to be accurate.