Marc Kery is a population ecologist with the Swiss Ornithological Institute. He is the author of about 80 peer-reviewed joumal articles and two books on a wide range of topics, including the analysis of lange-scale monitoring programs, demographic population analyses, experiments design for animal and plant surveys, and the population ecology of rare species. J. Andrew Royle is a research statistician at the US Geological Surveys Patuxent Wildlife Research Center.
His research is focused on the applicator of probability and statistics to ecological problems, especially those related to animal sampling and demographic madding, about which he has authored over 100 peer-reviewed joumal articles and three books.