[1] US Geol Survey, Patuxent Wildlife Res Ctr, Natl Museum Nat Hist, Washington, DC 20013 USA
[2] Univ Minnesota, Bell Museum Nat Hist, Minneapolis, MN 55455 USA
[3] Univ Calif Berkeley, Museum Vertebrate Zool, Berkeley, CA 94720 USA
[4] Univ Florida, Florida Museum Nat Hist, Gainesville, FL 32611 USA
[5] Cornell Lab Ornithol, Ithaca, NY 14850 USA
[6] Michigan State Univ, Museum Zool, E Lansing, MI 48824 USA
[7] Michigan State Univ, Dept Zool, E Lansing, MI 48824 USA
[8] Univ Toronto, Ramsay Wright Zool Labs, Dept Ecol & Evolutionary Biol, Toronto, ON M5S 3G5, Canada
[9] Louisiana State Univ, Museum Nat Sci, Baton Rouge, LA 70803 USA
[10] Field Museum Nat Hist, Chicago, IL 60605 USA
[11] Univ Alaska Museum, Fairbanks, AK 99775 USA