Abstract
The current study was designed to determine the concentrations of toxic metals (Ni, Pb and Cr) in feathers of birds collected from four regions of NE Pakistan. Feather samples of birds (House Crow, Common Myna and House Sparrow) were collected from different areas. Atomic absorption spectrophotometer was used to determine the concentration of metals in feathers. Analysis of the data revealed that concentrations of Pb and Cr were significantly different (p < 0.05) among bird species, whereas no difference (p > 0.05) was detected among bird species (house crow, common myna and house sparrow) for Ni. A significant difference was found for the concentration of Pb and Ni in all the four studied regions. Whereas, non-significant difference was found in all the studied regions for the concentrating of Cr. It was revealed that there is significant rising concentration of metals (Pb, Cr) in feathers of birds in Azad Kashmir.
Highlights
Heavy metals exist in nature in minute quantities, but industrialization and certain urbanization practices have increased their levels in the environment posing to threat to wild life (Pollack et al 2017)
In order to control the environmental concentration of heavy metals, it is important to select birds that are sensitive to changes in the environment and those that respond in predictable ways
House Sparrow Passer domesticus, House Crow Corvus splendens and Common Myna Acridotheres tristis were used in the current study to monitor metal contamination
Summary
Heavy metals exist in nature in minute quantities, but industrialization and certain urbanization practices have increased their levels in the environment posing to threat to wild life (Pollack et al 2017). In order to control the environmental concentration of heavy metals, it is important to select birds that are sensitive to changes in the environment and those that respond in predictable ways. For this purpose, House Sparrow Passer domesticus, House Crow Corvus splendens and Common Myna Acridotheres tristis were used in the current study to monitor metal contamination. House Sparrow Passer domesticus, House Crow Corvus splendens and Common Myna Acridotheres tristis were used in the current study to monitor metal contamination These birds are related and usually live within human inhabitation. The second objective of the current study was to compare the results of this study with the recorded values in Pakistan’s polluted area, as well as in some other countries in order to learn more about the extent of the impact of metal pollution
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