Plymouth, MA, Jun 21, 2010 — Shorebirds who spend their summers along the coasts of Maine, Massachusetts and New York are safe, for now, from the effects of the massive BP oil spill that's fouling the waters and coastline of the Gulf of Mexico. But many of them will soon migrate south for the winter, many right to areas in the path of the spreading oil. Northeast biologists are trying to get a head start on tracking their progress. They're especially concerned about protected birds like the oyster catcher. Maine Public Radio's Susan Sharon reports.