Fill in the Blanks Mercury in birdsOnline version Fill in the blanks based on FIGURE from scientific publication. by Anna Wielgopolan 1 insectivorous Gadwall Mallard lowest bittern goose highest Eurasian higher significant Hg pintail Greylag Little Northern hoopoe omnivorous Common trophic bittern concentrations in the feathers of birds from FIW ranged from 0 . 005 ± 0 . 002 ? g g ? 1 d . w . ( ) to 0 . 380 ± 0 . 047 ? g g ? 1 d . w . ( ) . In general , the average Hg concentration in the feathers from the to value was as follows : Greylag goose > ? ? > ? > Common hoopoe . There was a difference between these species . The Greylag goose had significantly Hg levels in their feathers than did the other species . Differences in Hg concentrations in feathers were also tested according to the level according to the dietary habits of the birds : omnivorous , piscivorous , and . The mean Hg concentrations in these three trophic levels decreased in the following order : > piscivorous > insectivorous .
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