Telegraph: Spring – as far as migrant birds are concerned – began in Britain in mid-March and a week before the equinox this year, at least in the south of England. While the opposite end of the country will have to wait longer to experience such delights, the first real wave of passage songbirds of 2008 appeared on Channel coast headlands such as Portland Bill, Dorset. Martin Cade, Portland Bird Observatory’s warden, spoke of fields being "festooned" with wheatears, …