Spatial capture-recapture model analysis is often used to estimate tiger abundance. A new study led by Dr. Robert Dorazio of the United States Geological Survey, and co-authored by WCS’s Dr.Ullas Karanth, however, finds that dates and times of animal detections are often not factored into the analysis. This is despite the fact that this data is available when using “continuous-time” recorders such as camera-traps.