Beaufort Gazette: It’s not unusual in the late fall and winter months for Hilton Head Island bird watchers to spot warblers and tropical birds that normally would migrate to Florida or Central America this time of year. “Spring is coming earlier,” said Barry Lowes of the Hilton Head Island Audubon Society. “The birds are migrating earlier. … In the fall we get birds that should be way down in Central and South America.” When warm temperatures carry through winter months, the birds linger and …