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Monitoring the impact of anthropogenic disturbance on species or populations of interest is an important goal of conservation (Van Dyke 2008). Because the effects of environmental alteration often manifest in an organ ism's physiology before changes can be detected at the population level, physiological measures can provide earlier detection of disturbances and greater predictive capacity than traditional demographic methods (Wikel ski & Cooke 2006; Ellis et al. 2012). This mechanistic approach, known as conservation physiology, can also help determine which populations are most susceptible to disturbance, key periods when disturbances may be most detrimental, and whether management techniques are having positive effects (Carey 2005; Wikelski & Cooke 2006). Incorporating physiological biomarkers into pop ulation monitoring also provides the opportunity to in terpret anthropogenic changes from the …