The annual late winter/early spring plankton bloom in Long Island Sound is underway, as of today. Each March through mid-April (starting a bit early this year), thousands of birds congregate along the central and western Connecticut coast to feed on floating plankton (reportedly barnacle larvae). Rare and scarce gulls are often involved in this phenomenon. At its best, the gulling can be nothing short of spectacular. Here's hoping for more interesting sightings this year.