Interesting article. ** Songbirds sing cross-species duet ** Two species of songbird in Peru have evolved almost identical songs to keep each other out of their territory, say scientists. < http://news.bbc.co.uk/go/em/fr/-/2/hi/science/nature/8246424.stm > Joan Sommer Fredonia N. Ozaukee County #################### You received this email because you are subscribed to the Wisconsin Birding Network (Wisbirdn). To UNSUBSCRIBE or SUBSCRIBE, use the Wisbirdn web interface at: //www.freelists.org/list/wisbirdn. To set DIGEST or VACATION modes, use the Wisbirdn web interface at: //www.freelists.org/list/wisbirdn. Visit Wisbirdn ARCHIVES at: //www.freelists.org/archives/wisbirdn.