The migratory path of the European Red Knot brings it to the Wadden Sea flats in the northern part of the Netherlands each year. There, the birds feed on cockles before continuing their migration, which can be up to 16,000 kilometers in distance. The flats are protected by two different acts, yet suction dredging was sanctioned by the Dutch authorities until 2004. As a result, the cockles’ meat has diminished significantly, causing a quarter of the Red Knot population to have died out. Read more about the Red Knots at New Scientist.