Hello, Birders. Nathan Pieplow and I had a nice time this morning, Saturday, Sept. 5th, with 8 participants in the ABA's workshop on "Frontiers of Field Ornithology: Nocturnal Migration in the West." We started in the dark at Walden Ponds, Boulder County, where nocturnal migration was slow but steady. In the perfectly calm night sky, we heard several Wilson's Warblers; although seemingly high up, their calls were nice and clear. We also heard some Chipping Sparrows, presumed Brewer's Sparrows, and presumed Western Tanagers. Plus, although we didn't hear them, Nathan may have recorded two MacGillivray's Warbler flight calls (see below). We saw a fair number of birds "on the ground" after daybreak, among them Green Heron and American Redstart. There was a bit of an autumnal flavor to the birdlife at Walden: 1 Orange-crowned Warbler, 2 Audubon's Warblers, 1 Green-tailed Towhee, and 1 Lincoln's Sparrow. Other stuff out there: 11 Wood Ducks, 2 Snowy Egrets, 2 Black-crowned Night-Herons, 2 Greater Yellowlegs, 2 Wilson's Snipes, 2 hummingbirds, 3 Western Wood-Pewees, 3 Western Warbling-Vireos (all 3 singing!), 3 Gray Catbirds, 1 Yellow Warbler, and 3 Brewer's Sparrows. After breakfast, Nathan downloaded for us the sonograms and audio of some of the nocturnal migrants we heard. It was neat to "see" the nocturnal flight calls of both "typical" and variant Wilson's Warblers. Also, Nathan recorded two faint flight calls that may have been MacGillivray's Warblers; they might also have been Vesper Sparrows; or they might have been something different. Still trying to figure out the flight call of MacGillivray's Warbler. Thanks to all for a nice day (and night) afield. Ted Floyd tedfloy...@hotmail.com Lafayette, Boulder County, Colorado ------------------------------- Ted Floyd Editor, Birding ------------------------------- Please support the American Birding Association: Click on http://www.goodsearch.com/?charityid=884482 to search the internet. Check out the American Birding Association on FaceBook: http://www.facebook.com/group.php?gid=22934255714 Check out the American Birding Association on Twitter: http://twitter.com/abaoutreach Please visit the website of the American Birding Association: http://www.aba.org _________________________________________________________________ Get back to school stuff for them and cashback for you. http://www.bing.com/cashback?form=MSHYCB&publ=WLHMTAG&crea=TEXT_MSHYCB_BackToSchool_Cashback_BTSCashback_1x1 --~--~---------~--~----~------------~-------~--~----~ Colorado Field Ornithologists: http://www.cfo-link.org/ Colorado County Birding: http://www.coloradocountybirding.com/
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