Long-term change in the avifauna of undisturbed Amazonian rainforest: ground-foraging birds disappear and the baseline shifts, Philip C. Stouffer, Vitek Jirinec, Cameron L. Rutt, Richard O. Bierregaard, Angélica Hernández-Palma, Erik I. Johnson, Stephen R. Midway, Luke L. Powell, Jared D. Wolfe, Thomas E. Lovejoy
Michigan Tech Publications