The survey team is finishing up the flights to observe and count elephants in the Serengeti ecosystem.
It has take several weeks to criss-cross the 12,000 square mile (30,000 km2) region which is home to more than 70 large mammal species.
As you can see from the photos below, in addition to elephants, the pilots and observers spotted giraffe and rhinos, as well as some spectacular sunsets from the air.
After the flying is done, the team will continue to review and finalized the data.
We may share some of the findings in future blog posts, so stay tuned.