11.   Bluejays, the neighborhood bullies of the suburban bird population, never attempt to fly through sheets of glass.

12.   Bird populations plummeted.

13.   Brennan predicts hunters will see a banner season for turkeys next year because the moisture expected to provide stellar conditions for vegetation-growth should increase bird populations.

14.   Fans of the heath hen dream of importing prairie chickens to start a genetically similar bird population.

15.   Fed into the Cornell computers, the information is almost instantly available, showing trends in bird populations and migrations.

16.   Given the size and the flight freedom of this bird population, the place is downright clean and odor-free.

17.   However, it could take decades to see bird populations and native plants make a comeback.

18.   Offshore mosquitoes had brought avian malaria, which decimated native bird populations.

19.   Pimm and other conservationists fear that dwindling bird populations and fragile vegetation will have a harder time making a comeback if water is siphoned off to communities first.

20.   So it is likely to ebb and flow in the bird population in coming years, and the human population as well.