![Nature](https://image.pbs.org/contentchannels/sgZceVW-white-logo-41-ZMqyFVU.png?format=webp&resize=200x)
Crash: A Tale of Two Species
Preview: Season 26 Episode 7 | 30s
Airs Sunday, march 20, 2011 at 8:00 p.m. ET. Check your local listings.
A story of the interconnection of life: NATURE discovers how the plummeting number of horseshoe crabs affects the red knot, a tiny bird. 3/20/11
Major support for NATURE is provided by The Arnhold Family in memory of Henry and Clarisse Arnhold, The Fairweather Foundation, Sue and Edgar Wachenheim III, Charles Rosenblum, Kathy Chiao and...
![Nature](https://image.pbs.org/contentchannels/sgZceVW-white-logo-41-ZMqyFVU.png?format=webp&resize=200x)
Crash: A Tale of Two Species
Preview: Season 26 Episode 7 | 30s
A story of the interconnection of life: NATURE discovers how the plummeting number of horseshoe crabs affects the red knot, a tiny bird. 3/20/11
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Explore More Ways to Watch
Bring the beauty and wonders of wildlife and natural history into your home with classic NATURE episodes.Providing Support for PBS.org
Learn Moreabout PBS online sponsorshipMajor support for NATURE is provided by The Arnhold Family in memory of Henry and Clarisse Arnhold, The Fairweather Foundation, Sue and Edgar Wachenheim III, Charles Rosenblum, Kathy Chiao and...