Migratory Birds of the Great Lakes University of Wisconsin Sea Grant Institute
 about habitat birds + science 20 birds
copyright UW Sea Grant, writer: L. Wiland, design: T. Yao contact us credits

Birds + Science, pages 1 2 3 4 5 6 7

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Chemical History and Herring Gull Eggs — Bird eggs help scientists follow the history of chemicals in the Great Lakes. Over the past few decades, all kinds of chemicals have been found in the waters of the Great Lakes. The Canadian Wildlife Service wants to know which ones are affecting wildlife. To find out, experts go out every year to collect and analyze the eggs of Herring Gulls. >>

Poisoned Eggs — Scientists wonder how flame retarding chemicals get into bird eggs around the Great Lakes. For three decades, scientists in Canada have studied the eggs of herring gulls in the Great Lakes to look for different types of chemical contamination. They do this to get an idea of what chemicals might be affecting Great Lakes wildlife. They're finding high levels of chemicals known as PBDEs. >>

Too Close for Comfort — As people spread out into more natural areas, wildlife is paying the price. A lot of birds that need to live in heavily wooded places are losing out to the construction of new homes and vacation retreats across North America. Ecologists say the bird habitat is being perforated by the clearing of land for new buildings. And the presence of people and pets also is putting birds at risk. >>

ML Reeb writer: Laurence Wiland design: T. Yao