Travel/Leisure
Protecting wildlife
Don't feed waterfowl human food. It can harm them in the following ways: They become dependent on the unhealthy food and stop foraging for natural plant and animal material. They lose their desire to migrate to warmer climates where natural food sources are abundant. The constant artificial food source contributes to overpopulation, resulting in water-quality concerns.
Tips from It's Easy Being Green by Crissy Trask