The Journey of a Migratory Shorebird
a day ago
- The Hudsonian godwit is a small, long-distance migratory shorebird studied by conservation biologist Nathan Senner, who collects data on its movements, physiology, and genetics.
- Migratory shorebird populations have declined by over 50% since 1980, with long-distance migrators like the godwit facing the greatest threats.
- Godwits undertake epic non-stop flights of up to 7,000 miles, as shown by a bar-tailed godwit named E7, which broke records in 2007.
- Researchers discovered that godwits shrink their digestive organs during migration to reduce weight and metabolic demands, then regrow them upon arrival.
- Nesting and chick survival are precarious, with only about 20% of chicks fledging; climate change is altering arrival times and insect availability.
- Conservation efforts include protecting key wetlands like the Yellow Sea mudflats and establishing reserve networks, but require understanding where birds are most vulnerable.