21.   Most folks put up metal screen across their chimney tops to keep birds from roosting inside.

22.   Officials at the Orlando, Fla.-based Marriott Ownership Resorts have said they are committed to keeping the birds at the Custom House.

23.   Researchers are already brainstorming ways to keep birds away.

24.   --Robert Stroud, the Birdman of Alcatraz, never kept birds at that famous prison.

25.   So he recommended that the birds be kept outside the building, which is in a patch of piney woods near the Braintree line.

26.   The turkeys on Nicholas ranches in Sonoma and Marin counties are the aristocrats of the turkey world, big birds kept for mating, not stuffing.

27.   The U.S. Interior Department has saluted the California Department of Corrections for installing protective nets over electrical prison fences to keep birds from being electrocuted.

28.   They also use the dummy nests to keep other birds from nesting and eating their food.

29.   This, they said, would keep birds from flying down inside the chimney.

30.   You can tack up netting over the opening to keep the birds from getting in.