1. Laboratory of Ecology and Conservation of Mammals, Federal Univ. of Lavras (UFLA) PO Box 3037 Lavras Minas Gerais 37200‐000 Brazil
2. Dept of Biology, Sciences Faculty, Univ. of the Andes 5101 Merida Venezuela
3. Zoological Research Museum A. Koenig (ZFMK), Dept. of Vertebrates/Ornithology Bonn Germany
4. Natl Inst. for Science and Technology in Wetlands (INAU), Federal Univ. of Mato Grosso (UFMT) Cuiaba MT Brazil
5. Bornheim Germany