BBC / Elizabeth Baines Crowds on the street in Shelf hoping for a glimpse of the rare bird Crowds of birdwatchers flocked to a quiet cul-de-sac after a rare sighting of a species perched on a garden washing line. The report of the scarlet tanager in Shelf, near Halifax, is believed to be the first time one of the birds has been sighted in Yorkshire. The stocky songbird normally travels