Warddeken Land Management. Rangers in the Warddeken Indigenous Protected Area review hundreds of thousands of camera-trap images to monitor wildlife. MegaDetector screened 1,572 hours of ranger data, cutting images needing review from 925,088 to 172,290 and processing from six months to two. Rangers shifted time to species identification, land management and language documentation. People still verify the results, according to a peer-reviewed study.