Nature's Notebook is an iPhone app developed by the National Phenology Network. This free program is designed to help users observe and record plant and animal life cycle events, such as flowering and bird migration. With Nature's Notebook, you can mark your sites, create a list of plants and animals, and venture into the field to record observations throughout the seasons.

The app provides a convenient platform for citizen scientists, educators, and researchers to contribute valuable data to the study of phenology. By collecting information on the timing of biological events, Nature's Notebook helps researchers understand how climate change and other factors are affecting ecosystems.

With its user-friendly interface and comprehensive features, Nature's Notebook is a powerful tool for anyone interested in studying and understanding the natural world. Start making meaningful contributions to scientific research today by downloading Nature's Notebook from the App Store.