‘Natural experiment’ Demonstrates Top-Down Control of Spiders by Birds on a Landscape Level

There were errors in Figure 1 and Figure 3. The correct Figure 1 can be viewed here: . The correct Figure 3 can be viewed here: In the Materials and Methods section, under the heading Insectivorous birds, the scientific name for the Mariana Swiftlet is listed incorrectly twice in the following sentences: Only two of the 10 native insectivorous forest bird species remain on Guam: the Micronesian Starling (Aplonis opaca), and the Marianas Swiftlet (Acrocephalus luscinia). Aplonis opaca has a localized remnant population of less than 400 birds (D. Vice, J. Quitagua and L. Obra, pers.comm.) covering an area of less than 50 km2, and Acrocephalus luscinia has remnant populations numbering around 1100 in three caves in Southern Guam(A. Brooke, pers.comm.) The correct name is Aerodramus bartschi