Hi Tweets,

Here is the link to an interesting article regarding the influence of
urban noise on birds, specifically the White-Crowned Sparrow.

http://www.scientificamerican.com/podcast/episode.cfm?id=sparrows-sing-higher-to-pierce-urba-12-04-09

Happy birding,
isadora arevalo wong
seattle, wa
chupaflor at igc.org


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