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. 2011 Oct;159(10):2368-74.
doi: 10.1016/j.envpol.2011.07.001. Epub 2011 Jul 23.

Species- and age-related variation in metal exposure and accumulation of two passerine bird species

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Species- and age-related variation in metal exposure and accumulation of two passerine bird species

Å M M Berglund et al. Environ Pollut. 2011 Oct.

Abstract

We measured the concentration of several elements (arsenic [As], calcium [Ca], cadmium [Cd], copper [Cu], nickel [Ni], lead [Pb], selenium [Se] and zinc [Zn]) in adult and nestling pied flycatchers (Ficedula hypoleuca) and great tits (Parus major) at different distances to a Cu-Ni smelter in 2009. Feces of nestlings generally failed to correspond with internal element concentrations but reflected the pollution exposure, indicating an increased stress by removal of excess metals. The uptake of Cu and Ni were regulated, but As, Cd, Pb and Se accumulated in liver tissue. Pied flycatchers had generally higher element concentrations than great tits. The higher accumulation of As and Pb in pied flycatcher livers was explained by a more efficient absorption, whereas the higher Cd concentration was primarily due to different intake of food items. Age-related differences occurred between the two species, though both Cd and Se accumulated with age.

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