Related Websites

Osprey:

http://www.cvps.com/osprey/facts-beak.shtml

Mississippi River

The EPA, under "Water Discharge Rate" on the following page:
http://www.epa.gov/msbasin/marb.htm

The Upper Midwest Environmental Sciences Center (UMESC) of the US Geological Survey:
www.umesc.usgs.gov/documents/outreach/answers.doc

The Minnesota Department of Natural Resources:
http://files.dnr.state.mn.us/publications/volunteer/young_naturalists/mississippi/mississippi.pdf