Journey North

The best fit if you want to watch a migration happen in real time. Whenever you spot a monarch, a hummingbird or another migrant, you log the sighting, and it appears on live maps tracking the wave as it moves across the continent. One report on the first monarch of spring takes a minute. Those small reports add up to practical advice. A 2025 study in the Journal of Insect Conservation pooled more than a hundred thousand records of monarch eggs, caterpillars and chrysalises, Journey North's among them, and found breeding starts about a month later in the northeast of the range than in the northwest, timing meant to guide when roadsides get mowed.