PhysOrg Posted November 5, 2015 Share Posted November 5, 2015 Heavy metals, the result of contamination, may be toxic for animals to the extent of affecting their reproduction and physiology. This is the case with the great tit, a species of bird whose plumage colour is affected either negatively or positively depending on exposure to certain contaminating substances. Mercury, copper and chrome may cause the male great tit to be less attractive to the females. Read the full article on PhysOrg Link to comment Share on other sites More sharing options...
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