Zinc bioaccumulation in house sparrows (Passer domesticus) across urban and rural areas of Meknes, Morocco: a bioindicator of environmental pollution.

This study investigates zinc (Zn) bioaccumulation in house sparrows (Passer domesticus) across urban and rural areas of Meknes, Morocco, to evaluate their effectiveness as bioindicators of environmental pollution. Fifty sparrows were sampled from five locations: an industrial zone, town center, bus station, main road, and a rural reference site. Zinc concentrations, measured on a dry weight basis using Inductively Coupled Plasma Mass Spectrometry (ICP-MS), revealed significant differences between sites for the liver (111.