Climate change affects migratory birds in various ways. Some of the impacts include changes in their migration patterns due to shifts in temperatures and availability of food sources. Warmer temperatures can cause birds to migrate earlier or later than usual, disrupting their natural rhythms. Additionally, changes in habitats and weather patterns can affect the availability of nesting sites and food sources along their migration routes. This can lead to decreased population numbers, changes in behavior, and potential extinction of certain species. Overall, climate change poses a significant threat to the survival of migratory birds and their ecosystems.