Monday, May 9, 2011

Chestnut-sided Warbler

Previously I have published Chestnut-sided Warbler posts on this blog (24 May 2010 and 20 August 2010).  Roger Tory Peterson called warblers "The Butterflies of the bird world;" I am reminded of small, brightly colored, tropical tanagers.

Male Chestnut-sided Warblers sing two songs.  Peterson described the best-known song as "'please please please ta meetcha,' with the last note dropping." Thayer's guide to North American Birds provides us with a sample of the this song (copy-righted file used with permission). This song is used to attract females. A second song, with an unaccented ending, is sung later to keep other males from the singer's territory.  According to Richardson and Brauning (1995), "The two song classes are learned separately. Birds require visual contact with tutor males to fully develop their repertoires."

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