Mercury (Hg) is a toxic metal that accumulates in organisms and biomagnifies along food webs; hence, long-lived predators such as seabirds are at risk result of high Hg bioaccumulation. Seabirds have been widely used to monitor the contamination marine ecosystems. In present study, we investigated concentrations blood, muscle, feathers 7 procellariform breeding on Chatham Islands, New Zealand. ...