Supporting dataset on the content of Cu, Ni Cd, Pb, Zn, Ag, Mg, Fe, Co and Ca in the carcass, gastrointestinal tract tissues and the whole body of nestlings of a small passerine bird, the Eurasian Reed Warbler from an intensively fertilized fishpond habitat.

The dataset presented in this data paper supports "The prenatal assimilation of minerals and metals in the nestlings of a small passerine bird" (Orłowski et al. 2024) [1]. The article includes raw data on dead nestlings of a small passerine bird, the Eurasian Reed Warbler breeding in an extensive reedbed (with dominating plant species, the Common Reed located in an intensively fertilized fishpond habitat, the Stawy Milickie [Milicz Ponds] Nature Reserve (SW Poland). The data include the description of concentrations of Cu, Ni Cd, Pb, Zn, Ag, Mg, Fe, Co and Ca measured in the isolated, emptied gastrointestinal tract, the whole body, and carcass of the each of 26 individual nestlings of a different age (1-9 days old) and hence a different stage of post-natal development. The dataset includes also some additional information on the breeding biology of the focal species.