Rare red-flanked bluetail has bird-lovers flocking to L.A. for a glimpse

Hundreds of hard-core birders and twitchers from across the nation have been flocking to South Los Angeles this week, hoping to catch a glimpse of a rare bird that wandered in from Siberia and inexplicably chose to hunker down within a hedge just south of the 10 Freeway.

The foreign visitor — or…