Throughout their range, the Critically Endangered Rüppell’s Vultures choose to nest atop cliff ledges. Often, the most effective way to monitor the birds is by conducting helicopter surveys. Dr. Darcy Ogada and her team have led such surveys in northern Kenya and the data collected have helped them to estimate population sizes and monitor changes in breeding populations. This information helps when engaging the county government in order to protect some of the most important nesting cliffs, all of which lie outside of the formally protected areas. Your purchase helps to ensure this monitoring work can be done and breeding habitat can be conserved.