This island-by-island inventory of Caribbean seabirds includes colony locations and estimates of the numbers of breeding pairs, the severe threats that seabirds face, and proposals for research and conservation measures. In the past two decades, global populations of seabirds have declined faster than any other group of birds, yet almost no conservation resources are expended to counteract this trend, especially among tropical seabirds. This volume includes twenty-five national accounts, written by professional and amateur ornithologists, and illustrated by maps specially prepared by William Mackin and The Nature Conservancy. This inventory brings together the best and most complete set of data on breeding seabirds that nest on the islands throughout the Caribbean, making it invaluable for anyone interested in sustaining seabird populations.