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In Episode 132, Ivan Phillipsen explores the "circulatory system of the land"—the world of rivers and streams. These flowing-water environments, serve as vital habitats for avian life.

The episode delves into the ecology of these waterways, breaking down the differences between clear, rocky upland streams and the warmer, sediment-rich rivers of the lowlands. Listeners will learn about the distinct "zones" of a stream—from the central channel to the lush riparian zone—and discover what resources birds need to thrive in these high-energy environments.

At the heart of the discussion are the "stream specialists"—a select group of approximately 60 bird species worldwide that are evolutionarily tied to flowing water. From the underwater antics the American Dipper to the massive, fish-hunting Blakiston’s Fish-Owl, the episode highlights the incredible adaptations of birds that make their living among the rapids. Whether exploring the global diversity hotspots of the Himalayas or the secretive lives of "streamcreepers," this episode is an inviting look at the birds that call the water's edge home.

Wild Latitudes: Worldwide birding and nature tours.

Link to this episode on the Science of Birds website

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