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Documents disponibles écrits par cet auteur (6)
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Article
Cristian Pérez-Granados, Auteur ; Karl-L. Schuchmann, AuteurStudying seasonal changes in the vocal activity of birds may shed light on the function of avian vocalizations and the phenology of life history events. Our current knowledge regarding the seasonality of the vocal behaviour of tropical birds in [...]
Article
Cristian Pérez‐Granados, Auteur ; Karl-L. Schuchmann, AuteurDans Ibis (163(2) 2021)Some diurnal birds vocalize at night but the reason for this has seldom been studied. We monitored the nocturnal vocal activity of the Undulated Tinamou Crypturellus undulatus from June 2015 to May 2016 at three recording stations in the Brazili[...]
Article
Andre-A. Weller, Auteur ; Karl-L. Schuchmann, AuteurBiogeography and taxonomy of the widespread Andean trochilid genus Lesbia LESSON, 1833 are analyzed based on distributional data and morphological characters of skin specimens. The Black-tailed Trainbearer, L. victoriae, and the Green-tailed Tra[...]
Article
Swen C. Renner, Auteur ; Karl-L. Schuchmann, AuteurWe conclude that the two currently recognized subspecies of Eugenes fulgens, should be regognized as full species within that genus: E. fulgens and E. spectabilis. Biogeography and morphology further support merge of the monotypic genera Sternoc[...]
Article
Olaf Jahn, Auteur ; Edwin E. Vargas Grefa, Auteur ; Karl-L. Schuchmann, AuteurThe rare and threatened Long-wattled Umbrellabird Cephalopterus penduliger inhabits the canopy and mid-storey level of humid to wet foothill and montane forests (150-1,800 m) of the Andean slopes of south-west Colombia and western Ecuador. Here [...]
