Folks, Between about 10:30 PM and 6:34 AM on the night of September 13-14, my rooftop microphone in Cleveland Heights detected over 2300 calls in the thrush frequency range and about 90 calls in the higher frequency warbler/sparrow range. I'm new at night flight recording, but I gather this is an exceptionally high number of detections. As I previously posted, I detected over 400 thrush calls the previous night (September 12-13) as well. On Wednesday, September 15, Julie West banded over 20 thrushes at the Nature Center at Shaker Lakes (3/4 mile southeast of my house), after having banded 18 on the 13th. Interestingly, folks monitoring night flight calls farther east in upstate New York detected a very large number of calls (characterized as representing the largest single-night movement in 20 years) in warbler/sparrow range on the night of September 10/11. My microphone was not operating that night, but winds here were quite different from those farther east and probably not as favorable. Sorry for posting this so late. One of the things I'm discovering about night flight call recording is that analyzing the data you collect is labor-intensive. Laura Gooch Cleveland Heights ______________________________________________________________________ Ohio-birds mailing list, a service of the Ohio Ornithological Society. Our thanks to Miami University for hosting this mailing list. Additional discussions can be found in our forums, at www.ohiobirds.org/forum/. You can join or leave the list, or change your options, at: http://listserv.muohio.edu/scripts/wa.exe?LIST=OHIO-BIRDS Send questions or comments about the list to: [log in to unmask]