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Jonhs Hopkins University Press Baltimore (USA) 466p
Article
C. Mettke-Hofmann, Auteur ; R. Greenberg, Auteur
Article
R. Greenberg, Auteur ; P. Bichier, Auteur ; A. C. Angon, AuteurWe surveyed birds in cacao (Theobroma cacao) plantations in the state of Tabasco, Mexico. The shade canopy was planted by farmers and consisted of approximately 60 species of trees with no single dominant species. Canopy height averaged 15 m and[...]
Article
R. Greenberg, AuteurIn many tropical habitats, the number of birds can more than double,vith the arrival of migratory birds in the autumn. This influx often occurs at a time when the total biomass of potential food resources is at an annual low. Previous food-relat[...]
Article
Female Swamp Sparrows (Melospiza georgiana) give a loud series of chips as they leave their nest during incubation and brooding. I tested the efficacy of basing breeding population surveys on the nest departure call (NDC). For a subset of point-[...]
