Published online by Cambridge University Press: 11 May 2010
Wintering Nearctic migrants constitute a high proportion of the birds present in many terrestrial habitats in the Bahamas and Greater Antilles, but their proportions decline southward through the Lesser Antilles. Many migrants winter on densely populated islands which have been extensively deforested. Current estimates show that only 21% of the land area, or approximately five million hectares, remain in forest on Caribbean and Bahamian islands, indicating that most of the major deforestation has already occurred. Although reforestation is under way on a few islands, many remnant forest fragments are threatened by humans or natural disturbances such as drought or hurricanes. Thus wintering migrants requiring closed-canopy forest are at greatest risk to habitat loss, whereas species requiring early successional habitats are not currently threatened, assuming that pesticide use does not increase. Policies which protect forests, particularly mangroves, wet limestone and montane broadleaf forests in the Greater Antilles, and broadleaf scrub (“coppice”) in the Bahamas, will be beneficial to migrants and endemic species.