This observation by David may help explain the migration/radar paradox we have been observing. Perhaps when birds migrate under cloudy conditions, they are more likely to fly low and therefore escape detection by radar.
Peter Sent from who knows where > 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 > Rules and Information > Subscribe, Configuration and Leave > Archives: > The Mail Archive > Surfbirds > BirdingOnThe.Net > Please submit your observations to 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/ --
