Most frogs need water to release their eggs into. This can range from a puddle, to a creek or dam. Trees, grasses and litter also are important frog habitat. Many frogs seek refuge in vegetation, especially near water, to escape predators like water birds, snakes, and fish. Vegetation cover also helps them to conserve water in dry weather.
Birds can help to control insects, especially pasture pests like scarab beetles.
They are also important in pollination and seed dispersal. A stream or river and the associated vegetation on the banks and flood plain are collectively called the 'riparian zone'. Riparian habitat often supports a lot of animals because of the constant water supply and the associated diversity of plants. A source of water is vital for most small native animals. Vegetation cover around the water prevents erosion and supplies nutrients for aquatic life.