
The return of migrant birds from their wintering grounds in the tropics is one of the delights of America's spring, as anyone will testify whose heart has leapt in April or May at the first liquid song of the woodthrush, or the first black-and-orange flash of the Baltimore...

The return of migrant birds from their wintering grounds in the tropics is one of the delights of America's spring, as anyone will testify whose heart has leapt in April or May at the first liquid song of the woodthrush, or the first black-and-orange flash of the Baltimore...

Seen as a whole, if they all arrived in a single flock, it would be truly amazing: 16 million birds. Swallows, martins, swifts, warblers, wagtails, wheatears, cuckoos, chats, nightingales, nightjars, thrushes, pipits, and flycatchers pouring into Britain from sub-Saharan Africa...