Survey data will help to answer a variety of questions about the lives and travels of hummingbirds, including:

• What are the nesting ranges and habitats for each species?
• What is the schedule for spring and fall migration for each species?
• What are the most important migratory corridors?
• How do natural nectar sources, garden flowers, and feeders affect hummingbird distribution?
• How do weather and land uses affect nesting and migration?
• How well do different species adapt to urbanization?
• How have drought and fire suppression affected hummingbird distribution?
• Are hummingbird ranges changing in response to global warming?
• Are Anna’s Hummingbirds continuing to expand their range?
• Are any species expanding their winter ranges?