Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!sdd.hp.com!zaphod.mps.ohio-state.edu!ub!galileo.cc.rochester.edu!rochester!pt.cs.cmu.edu!o.gp.cs.cmu.edu!andrew.cmu.edu!rk30+ From: rk30+@andrew.cmu.edu (Ruth Kline) Newsgroups: rec.birds Subject: Aberration in robin's call Message-ID: Date: 21 Jun 91 19:06:04 GMT Organization: School of Urban and Public Affairs, Carnegie Mellon, Pittsburgh, PA Lines: 8 One of my neighborhood robins seems to have developed his/her own song style. During the "evening" or "rain" song (sorry I don't know the correct ornithological term), this bird inserts three extra notes, something like G-D-G or A-E-A. Kind of nice, and certainly unique to my ears. Is this a common occurrence among birds? Is it an inherited trait? Thanks for any info!