1.   After two or more good seasons in succession, predatory birds become Markedly more plentiful.

2.   Birds become quieter in the afternoon, while butterflies and other insects are more active, feeding on the opened flowers.

3.   Brood parasitic birds are becoming favoured examples in studies of coevolution.

4.   The birds are becoming more numerous in this area.

5.   For many people birds become an obsession -- but for most they are but one part of the whole countryside experience.

6.   Abshier said the exotic birds can become aggressive, and state law prohibits them from roaming free.

7.   Eventually arms changed to wings, and birds became primarily creatures of the air.

8.   In recent years, as parks and marshes have become cleaner, the graceful birds have become a fairly common sight throughout the metropolitan area during summer months.

9.   Just how the eight-foot-tall birds from Africa became promises of the American Dream has a lot to do with cows.

10.   Mesta said once the birds become accustomed to their new home, biologists will rush at them from the chaparral to keep them wary of people.