A removal model for estimating detection probabilities from point count surveys.
Reference:
Farnsworth, G.L., K.H. Pollock, J.D. Nichols, T.R. Simons, J.E. Hines and J.R. Sauer. 2002. A Removal Model for Estimating Detection Probabilities from Point Count Surveys. Auk 119:414-425. doi:10.1642/0004-8038(2002)119[0414:ARMFED]2.0.CO;2