Cooperation in the Monteverde community made this work possible, beginning with collective foresight to protect the forests. Many biologists laid a solid foundation for our work and several directly helped get us started, including Eladio Cruz, Michael Fogden, Carlos Guindon, Bill Haber (who suggested the distance-to-divide hypothesis), and Dean Williams. Permission from land owners and managers was critical, including the Cruz, Guindon, Leitón, Lowther, Rockwell and Stuckey families, the Monteverde and Santa Elena cloudforest preserves, the Bajo del Tigre area of the Monteverde Conservation League, Bosque Eterno, Finca Ecologica and the Ecolodge. Laurie Harris and Luisa Moreno provided critical help with field work, Dan Majka helped with GIS analyses, and Jeff Albarella, Aaron Pierce, Tom Lord, and Tim Vargo helped with netting. Comments by Peter Waser, Rob Swihart, Scott Robinson, Roly Russell, and Martin Wikelski improved the manuscript. The work was facilitated by financial support from the American Ornithologists’ Union, Association of Field Ornithologists, A.A. Lindsey Graduate Fellowship, the Sigma Xi Scientific Society the Howard Hughes Medical Institute, and the National Aeronautics and Space Administration. This is publication 0807 for the Purdue Climate Change Research Center, Purdue University.