THERE'S NO SUCH THING AS SPECIES:

Black segregation in US drops to lowest in century (AP, 12/14/10)

America's neighborhoods became more integrated last year than during any time in at least a century as a rising black middle class moved into fast-growing white areas in the South and West.

Still, ethnic segregation in many parts of the U.S. persisted, particularly for Hispanics.

Segregation among blacks and whites fell in roughly three-quarters of the nation's 100 largest metropolitan areas as the two racial groups spread more evenly between inner cities and suburbs, according to recent census data.