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Date: | Fri, 4 May 2007 10:51:59 -0400 |
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ISEN-ASTC-L is a service of the Association of Science-Technology Centers
Incorporated, a worldwide network of science museums and related institutions.
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Patricia, hi!
I have not done such an experiment, but in the UK the Royal Society for the
Protection of Birds (www.rspb.org.uk) does a big annual public survey -
this is taken from their web page:
"The RSPB’s Big Garden Birdwatch is the largest wildlife survey in the
world. A simple design (one hour watching birds in the garden each
January) means up to 400,000 people have taken part each year. The data
provide an excellent snapshot of garden bird numbers across the UK -
contact the RSPB."
Hope this helps.
Regards, Peter Anderson
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