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Their huts, made of thatched palm fronds, stood in the middle of bleak clearings where every single tree had been felled, with the exception of royal palms, if any existed. Fish and Wildlife Service has declared extinct. VoL 194s J Dmxs, Ivory-billed Woodpeckers in Cuba 499 there squatters had moved in. Its wingspan was 30 inches (76 centimetres). Most of the lowland, old-growth, deciduous forests in Cuba had been cleared by the beginning of the twentieth century, restricting the ivory-billed woodpecker to the pine forests in eastern Cuba.
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Given these difficulties and the time pressure involved to ensure the conservation of this species, this paper discusses the need to use a different approach for an exceptional case. The ivory-billed woodpecker (Campephilus principalis) is an extinct species of woodpecker.It was about 20 inches (51 centimetres) in length. The ivory-billed woodpecker may have survived in the lowland forests of Cuba (Jackson 1996). An analysis based on a combination of factors related to habitat and behavior suggests that the expected waiting time for obtaining a distinct photo of an Ivory-billed Woodpecker is several orders of magnitude greater than it would be for a more typical baseline species of comparable rarity. Despite the publication of three independent papers that reported sightings of the Ivory-billed Woodpecker ( Campephilus principalis), its preservation became a controversial topic because nobody has been able to obtain a distinct photo, which is considered the standard form of evidence for documenting birds.