This morning, while walking Blue Hill Trail in Sherburne Refuge, heard a call that I've not heard in 20 years of birding.
Unfortunately have no visual or recorded evidence. Would describe the call as keeeit, one syllable, loud, gruff, bass (I'm a baritone, for me to imitate must go to bottom of my range), touch of rolling, repeated every few seconds in flight. Impressions were medium to large bird, circling at tree height, relatively fast flyer. Bit of a hawk/corvids mix to call. Thoughts? Al Schirmacher Princeton, MN Sent from my iPhone ---- Join or Leave mou-net: http://lists.umn.edu/cgi-bin/wa?SUBED1=mou-net Archives: http://lists.umn.edu/archives/mou-net.html
