Re: dowitcher ID


Joe Morlan
 

On Mon, 25 Oct 2021 16:47:00 -0700, "Edward Vine" <elvine@lbl.gov> wrote:

I had similar information in the 1970s that you had - also from PRBO: generally, LBDOs along the coast and SMDOs inland. Similar guidance for Yellowlegs: Greater along the coast and Lesser inland.
This is definitely wrong. Short-billed Dowitchers are decidedly rare
inland in California at any season. They are fairly common in estuaries
with tidal mudflat in migration. In winter they occur only in the largest
estuaries such as San Francisco Bay, San Diego Bay, etc.

Long-billed Dowitchers outnumber Short-billed in the winter with most
occurring in fresh water habitat inland, but also in coastal estuaries
where they may occur with Long-billed. There Long-billed tend to
concentrate at creek mouths with emergent vegetation where they keep up a
constant series of contact notes. They tend to segregate from Short-billed
which prefer open mudflat without vegetation where they usually forage
silently, calling only when spooked or in flight.

Both Greater and Lesser Yellowlegs prefer fresh water habitats with
emergent vegetation. Greaters vastly outnumbering Lessers throughout
California in migration and especially in winter when Lessers become
extremely rare.
--
Joseph Morlan, Pacifica, CA

Join EBB-Sightings@groups.io to automatically receive all group messages.