The massive annual spring migration of America's birds – millions of them – is underway. Here's how to follow along at home.

"What a beautiful bird and a great day to see it!" Gardener astounded by rare backyard visitor's arrival: 'I haven't seen one ...

Areas of high migration include Iowa, central Texas and up into Oklahoma ... the western tanager and the snow bunting. Long-distance migrants: These birds fly thousands of miles, often from ...