I have used both, and prefer the Sibley. It costs $ but the set-up is nice and shows most, if not all, of the plumages that are seen in the printed guide.
The sound recordings are great for field reference, but one should not play them loud enough to get a response... Holly Peirson Columbus, SE Anoka Co ---- Join or Leave mou-net: http://lists.umn.edu/cgi-bin/wa?SUBED1=mou-net Archives: http://lists.umn.edu/archives/mou-net.html
