By finding and monitoring bird nests, NestWatch participants help scientists track the breeding success of birds across North America. Participants witness fascinating behaviors of birds at the nest and collect information on the location, habitat, bird species, number of eggs, and number of young. Scientists use these data to track the reproductive success of North American breeding birds across the continent. Launched in 2007 with funding from the National Science Foundation, NestWatch has collected more than 100,000 nesting records. Combined with historic data, this information will help scientists address how birds are affected by large-scale changes such as global climate change, urbanization, and land use.