Episode Details

For the first time ever, scientists are tracking rufous hummingbirds on their epic 4,000-mile migration from Alaska to Mexico using ultra-light solar-powered trackers smaller than a grain of rice—transmitters that ping real-time locations via smartphones. With populations down 60% since the 90s and vital pollinators facing shifting routes likely driven by climate change, this tech-driven quest is revealing wild surprises: one bird pinged a boat in Prince William Sound, another took a mountain detour. The birds may shake off the tags, but for now, researchers are holding their breath as these tiny navigators rewrite the map of their own survival.

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