Friday afternoon, during a series of high volume rainfalls from passing thunderstorms, and after two days of unusually high heat, an exodus of crawfish fled Glenwood Lake in New Rochelle. They climbed the steep bank around the lake and scuttled out into the roadways to be pancaked by the tires of passing cars.
Question: why did they suddenly flee the lake? Was there something in the sudden influx of storm drain water that irritated them? Was is intolerance to anaerobic environment caused by the overgrowth of algae? Was is not enough food for the large population?
These crayfish seem to be new to the lake within the last five years or even more recent.