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Mobile species which have among the highest aesthetic and economic value are also among the most difficult of the natural resources to survey. Yet, wild population often must compete with the demands of greater energy and commodities production. In order to assess the cost benefits of alternative resource management policies, improvements in population survey techniques and tests of effects will be necessary. Current research efforts focus on assessing population effects in an hypothesis testing framework using capture-recapture data. Research on design optimality indicates that many field studies which failed to detect population changes could have done so if sampling efforts had been properly allocated. Current applications of statistics include:

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