Historically, the ivory-billed woodpecker was considered extinct due to habitat loss, hunting, and other human activities. The last confirmed sighting of an ivory-billed woodpecker occurred in 1944 in Louisiana, and extensive searches conducted in subsequent decades failed to find any evidence of the bird.
In 2005, a video was released that claimed to show an ivory-billed woodpecker in the Cache River National Wildlife Refuge in Arkansas. This video sparked renewed interest in the possibility that the species might still exist. However, the video was subsequently the center of controversy, with some experts questioning its authenticity or suggesting that it could have been a pileated woodpecker (Dryocopus pileatus), which is a similar-looking but distinct species.
Subsequent searches for the ivory-billed woodpecker in the Cache River National Wildlife Refuge and other potential habitats yielded inconclusive results. While some researchers reported hearing or seeing the bird, no definitive evidence emerged to confirm its continued existence.
In 2021, the U.S. Fish and Wildlife Service conducted a comprehensive review of the available scientific evidence and concluded that the ivory-billed woodpecker should be considered "possibly extinct." The Service noted that while the 2005 video and other reports provided some hope, the lack of substantial evidence over many years of intensive searches made it unlikely that the species still exists.
Nevertheless, the debate surrounding the ivory-billed woodpecker continues, and some researchers and enthusiasts believe that the bird may still be out there, undiscovered in remote or understudied areas. As such, the search for the ivory-billed woodpecker remains ongoing, and any new evidence or sightings will be closely scrutinized by the scientific community.