Razorbills (Alca torda) as bioindicators of mercury pollution in the southwestern Mediterranean

► Mercury levels were analyzed in Razorbill tissues from the Mediterranean area. ► Razorbills were chronically exposed to low levels of MeHg via dietary intake. ► We propose prediction equations of brain and kidney Hg levels using feather shafts. ► Razorbill can be useful for assessing marine environmental health.