The Columbia Spotted Frog is pretty common in the northwestern U.S. and Canada, but it's been declining in Utah, where I live. I have a pond at our cabin where I would like to introduce the frog, but I haven't found any place that sells them. They tend to sell the more popular 'pet' varieties. Suggestions?

Would anyone in Oregon or Washington or B.C. be able to go to the nearest pond and gather up some tadpoles?