Monarch Butterfly Migration Data Spring 2001 Links to data previously reported: As of February 28, 2001 As of March 14, 2001 As of March 28, 2001 As of April 4, 2001 As of April 11, 2001 As of April 18, 2001 As of April 25, 2001 As of May 2, 2001 As of May 9, 2001 As of May 16, 2001 As of May 23, 2001 As of May 30, 2001 As of June 6, 2001 As of June 20, 2001 Copyright 2001 Journey North. All Rights Reserved. Please send all questions, comments, and suggestions to our feedback form