NestWatch by the Cornell Lab is an iPhone application that serves as the Cornell Lab of Ornithology’s citizen-science project focused on tracking nesting birds in North America. Users can contribute to this project by reporting bird nests they find, adding data such as species, number of eggs, hatch dates, and more. This app enables users to be part of North America’s largest avian nesting success database.

With full offline functionality, NestWatch allows users to enter bird nest observations from anywhere in North America, making it ideal for areas with limited or no internet connection. Users can track their nesting statistics in real-time, manage nest box trail data efficiently, and sync their data seamlessly with the web version for multi-user support. The data contributed by users are openly available for scientific research, education, and conservation purposes.