Alca torda

Red-winged blackbird, Agelaius phoeniceus eggs (less shell) and chicks (less feathers, feet, beaks, stomach contents, and wings) total PCBs Green Bay, Wisconsin, 1989 Razorbill, Alca torda adipose tissue males vs. females England, 1988 5400-8900 FW 9... 

Mercury-selenium interactions are significant in marine mammals and seem to be a factor in loons however, this is not the case in marine birds. Mercury concentrations in oceanic birds were not correlated with selenium concentrations, as evidenced by values in livers of murres, Uria spp. and razorbills Alca torda, and in breast muscle of sooty terns Sterna fuscata. 

Birds and mammals exposed to PCB mixtures frequently react differently. PCBs generally elicit large-colloid goiters in birds these goiters are inherently different from hyperplastic goiters produced in mammals exposed to PCBs. Fish-eating seabirds, such as the razorbill (Alca torda), can rapidly metabolize PCB congeners that have at least one pair of adjacent unsubstituted metapara combinations in the biphenyl moiety. Razorbills metabolized 4-chlorobiphenyl to 4-chloro-4 hydroxybiphenyl however. 

Australian raven, Corvus coronoides, 800 Common raven, Corvus corax, 858 Corvus spp., 203 Razorbill, Alca torda, 636 Robin... 

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