Hybrids try to do both, but do neither very effectively.
Nevertheless, all behavior shows some refinement with age or experience. For example, gull chicks become more accurate with pecking as coordination improves with practice. This indicates that even innate behaviors are modified by experience. Consequently, it becomes difficult to determine just how much of a behavior is genetic and how much is a product of the environment in which the bird lives. This difficulty is commonly known as the Nature vs. Nurture Controversy.