Story: Common Grassland Birds Disappearing in Midwest , 7/31/07
1. How many years of bird population data did the National
Audubon Society analyze? Who collected the data? 2. What is the
biggest reason for steep declines in the bird population,
according to Chicago Audubon Director Stephen Packard? 3. How
much of Illinois used to be covered by prairie? What percent is
covered now? 4. After volunteers restored a Chicago-area
prairie, by what percent did Bobolink and Meadowlark populations
increase? 5. What is one kind of grass that volunteers are using
to reseed and recreate prairie? For more NewsHour Science
Reports, go to www.pbs.org/newshour/science. For more stories
about science and technology for students, go to
www.pbs.org/newshour/extra/students/science.