Wetlands are crucial for migratory birds as they provide essential habitat and resources during their long journeys. These habitats offer food sources such as insects, fish, and plants, as well as rest and shelter for birds to replenish their energy reserves. Wetlands also serve as breeding grounds for many species, allowing them to raise their young in a suitable environment. Additionally, wetlands help regulate water levels, purify water, and support a diverse range of plant and animal species, creating a healthy ecosystem for migratory birds to thrive.