Make habitats for them at your home. There are three things needed for them to survive: food, water, and shelter.
Food
To help them with food, consider plants that are rich in nectar and pollen. Natives grow best in our soil and climate and provide high quality food. Plan for all seasons! Choose plants that bloom in early spring to late fall, in order to provide as much food as possible. Plant in clusters of three or more of the same flower, not only for aesthetics, but enabling the pollinators to see the color easier when flying overhead. This also allows for efficient pollen transfer which in turn will lead to better flower and fruit production. Add a hummingbird feeder near brightly colored flowers for added food and enjoyment!
Water
For water, a bird bath may work for birds, however, most pollinators need a shallow water source. Something such as a saucer with pebbles and water gives the smaller pollinators something they can land on while they drink. Change water often to avoid mosquitoes.
Shelter
Small brush piles, minor leaf debris, and rock piles can provide protection for many species of pollinators. Bee houses and butterfly houses are another option. Even birdhouses and bat houses provide habitat and safety as they too are an important part of our ecosystem. Hummingbirds nest near nectar sources, and are attracted to native shrubbery for nesting material. Include different levels of canopies by incorporating different sized trees, shrubs and perennials. Leave an uncovered area of soil for ground nesting insects.
