I don't know if any of you have seen this, but there's an article about cows & vernal pools here http://www.enn.com/news/2004-02-17/s_13169.asp Apparently this was also covered on the radio on the nationally broadcast Osgood File http://www.theosgoodfile.com/osgood/fri3.htm Olivia SER/PCA http://www.nps.gov/plants/