For the more information about the geologic resources of the National Park Service, please visit http://www.nature.nps.gov/geology/.
Wood Thrush (Hylochichla mustelina)
This common songbird has become a symbol of the decline of neotropical songbirds in North America. "Neotropical" refers to birds that winter in Central or South America or the Caribbean, and that breed in the United States or Canada. More than 300 North American bird species are neotropical migrants. Wood Thrush can be seen in many eastern United States national parks.
Since 1966, the Wood Thrush has declined by 43 percent. A contributing factor is forest fragmentation on both breeding and wintering grounds. It is also likely that acid rain has lessened the availability of calcium-rich prey, thereby reducing egg production. Currently, little is known about the importance of migratory stop-over sites and their effects on Wood Thrush decline.
Wood Thrush fly between 500 to 2,000 feet (152–610 m) high and travel at night. Their nocturnal journey allows them to take advantage of calmer air, cooler temperatures, and less active predators. Their journey takes them from summer breeding grounds in the eastern United States to wintering grounds in Mexico and Central America, a trek of some 1250 miles (2000 km).
Wood thrush use these and other national parks:
|George Washington Birthplace
National Military Park
|Great Smoky Mountains
Last Updated: December 21, 2010