As I walked East River Road north of the Ford Bridge Friday evening, at around 10 p.m., I heard a 4 to 5 second soft trill in the bluffs below me. Frequency and volume were constant. It repeated at 30 to 60 second intervals.
Keith Carlson, Roseville ---- Join or Leave mou-net: http://lists.umn.edu/cgi-bin/wa?SUBED1=mou-net Archives: http://lists.umn.edu/archives/mou-net.html
