Residents and visitors often see swallow-tailed kites flashing overhead during the spring months as they hunt just above the tree canopies.

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

In Southwest Florida, the birds are primarily found in large preserves like the Big Cypress National Preserves and parts of Everglades National Park, although they are a rare treat for birders and ...