Guidepost 2: What are the four goals of the scientific study of human development, and what do developmental scientists study? 1  The study of human development seeks to describe, explain, predict, and modify development.  Ways of studying human development are still evolving, making use of advanced technologies.
Dabbling ducks eat plants, seeds, grasses and other small insects and animals that they find on or under the water. Ducks which have broad beaks, (shovelers) sift their food for insects, snails and seeds from the mud.
They are also insectivores and will eat small insects. At other times of year, they also eat cultivated grains in open fields. Ducks feed off of larvae and pupae usually found under rocks, aquatic animals, plant material, seeds, small fish, snails, and crabs. Geese consume a wide variety of plant material, including grass, leaves, roots, etc.