Hi, all. Well, it was strong by our standards. ~250 flight calls per hour, with most birds seemingly high up--but nicely audible--in the clear, perfectly calm night sky. (Winds had been light and northwesterly at sundown.) Nearly all were warblers and sparrows. No thrushes, but several presumed Western Tanagers and a presumed Black-headed Grosbeak.
Location: Greenlee Preserve, Boulder County, Colorado. (Northwest of Denver.) Date: pre-dawn, Thurs., Sept. 10th. Details, if you're interested, at the COBirds list: http://tiny.cc/lzrFx All best, Ted Floyd tfl...@aba.org Lafayette, Boulder County, Colorado -- NFC-L List Info: http://www.NortheastBirding.com/NFC_WELCOME http://www.NortheastBirding.com/NFC_RULES http://www.mail-archive.com/nfc-l@cornell.edu/maillist.html --
