Lanka, Robert P. 1993. Validation of the Idaho Elk Sightability Model for use in the Black Hills of Wyoming and South Dakota. 80 p.
Recommends that 1) This technique should be adopted considering the data currently in use by both states. 2) Sightability surveys should be flown at least every 3rd year. 3) SD and WY should coordinate their flights so that adjoining habitat will be flown in the same year. 4) Project monies not used to date on this project should be used by the respective states to conduct sightability survey flights in the Black Hills during the winter of 1992-1993. 5) All high density flight subunits and at least 75% of all low density flight subunits should be flown during initial sightability surveys in order to have users become more comfortable with this technique and to get better distribution data. 6) Each state should subsample data collected during initial surveys to determine at what level of intensity they need to fly.