- Patuxent Wildlife Research Center National Museum of Natural History Tadpoles of the United States and Canada: A Tutorial and Key Ronald Altig 1 , Roy W. McDiarmid 2 , Kimberly A. Nichols 3 and Paul C. Ustach 4 1 Department of Biological Sciences, Mississippi State University, Mississippi State, MS 39762-5759, USA 2 USGS Patuxent Wildlife Research Center, National Museum of Natural History, 10th ...www.pwrc.usgs.gov/tadpole
- FROGGING ABOUNDS!!! *Photo by Steve Smith Welcome to The Wonderful World of Frogging! CALLING ALL FROGGERS! Or those wishing to get involved in doing some frogging in the Toronto area. The Toronto and Region Conservation Authority (TRCA) is looking for volunteers to conduct frog surveys again in 1998 (right now)! Surveys are needed for the Don River Watershed and the Humber River Watershed, but ...www.zoo.utoronto.ca/natalie/frogpage