The dots represents participants from the United States and Canada of the Feeder Watcher Program. The Feeder Watcher program was conducted by the Labortoire D'ornithologie de Cornell in 2000-2001. Participants in this program counted birds that visited their bird feeders during this time.
http://www.birds.cornell.edu/pfw_fr/Members/ParticipantMap00.htm
Subscribe to:
Post Comments (Atom)
No comments:
Post a Comment