This observation by David may help explain the migration/radar disconnect we have been observing. Perhaps when birds migrate under cloudy conditions, they are more likely to fly low and therefore escape detection by radar.
Happy spring birding Peter > On May 5, 2016, at 7:34 AM, David Nicosia <daven102...@gmail.com> wrote: > > I got finished by with work at 11 pm last evening and > in the parking lot before I got into my car I heard a > "stream" of chips, zips, zeets and zeeps! I listened for about > 5 minutes and it was constant. There were at least 3 SOLITARY > SANDPIPERS that flew by. Additionally, I was surprised to hear > a BARN SWALLOW and right before I left > an early SWAINSON'S THRUSH!! The birds were very low > as cloud ceilings has dropped to a few hundred feet > and there was a heavy drizzle falling. > > When I arrived at home which is at 1300 feet a few hundred > feet lower than the airport I still could hear the chips, zips > and zeeps etc but they were higher up. I listened for > several more minutes and heard one more SOLITARY > SANDPIPER but nothing else than I could ID. The radar > shows modest echoes at this time. > > Dave Nicosia > > -- > NYSbirds-L List Info: > Welcome and Basics <http://www.northeastbirding.com/NYSbirdsWELCOME> > Rules and Information <http://www.northeastbirding.com/NYSbirdsRULES> > Subscribe, Configuration and Leave > <http://www.northeastbirding.com/NYSbirdsSubscribeConfigurationLeave.htm> > Archives: > The Mail Archive > <http://www.mail-archive.com/nysbirds-l@cornell.edu/maillist.html> > Surfbirds <http://www.surfbirds.com/birdingmail/Group/NYSBirds-L> > BirdingOnThe.Net <http://birdingonthe.net/mailinglists/NYSB.html> > Please submit your observations to eBird <http://ebird.org/content/ebird/>! > -- -- NYSbirds-L List Info: http://www.NortheastBirding.com/NYSbirdsWELCOME http://www.NortheastBirding.com/NYSbirdsRULES http://www.NortheastBirding.com/NYSbirdsSubscribeConfigurationLeave.htm ARCHIVES: 1) http://www.mail-archive.com/nysbirds-l@cornell.edu/maillist.html 2) http://www.surfbirds.com/birdingmail/Group/NYSBirds-L 3) http://birdingonthe.net/mailinglists/NYSB.html Please submit your observations to eBird: http://ebird.org/content/ebird/ --
