Monarch butterflies in eastern North America migrate south to spend the winter on roosting grounds in Mexico. Volunteers place numbered tags on monarchs to help researchers learn more about their migration. Here's a video of me tagging a monarch where I live in central North Carolina (in October). If it survives its journey to Mexico, it will have traveled almost 1,600 miles. This butterfly has never been there before, yet--mysteriously--it knows the way!
