Usj

MIGRATING BIRDS IN DANGER:

Conservation Issues and Strategies

Since Europeans first settled in the Americas, more than half of the Western hemisphere's wetlands have been destroyed. Today, in spite of regulations, wetland destruction continues.

Crucial Roadside Park

More than 40 North American shorebird species —such as sandpipers, plovers, and curlews—breed in the Arctic and migrate to wintering sites in Central and South America. To complete these longdistance flights, shorebirds must accumulate large fuel reserves. The birds prepare for their journeys at a few food-rich staging areas, which are usually wetlands. In some cases, between 50 and 80 percent of the entire population of a species may visit a single site. The loss of such a staging area could devastate a population of shorebirds.

Studies show that the numbers of shorebirds are declining worldwide. In order to preserve and protect these valuable species, researchers must first determine shorebird populations and map their migratory routes.

Technology to the Rescue

Today, the work of preserving shorebirds has been greatly advanced through the use of computer technology. One group that uses computers in this work is the International Shorebird Survey (ISS). The ISS was established in 1974 and consists of both volunteers and professional researchers. The volunteers record information on populations, habitat characteristics, weather conditions, and human activity. Researchers use computer programs to identify relationships among these variables. Complex methods of analysis have revealed much about the migratory habits of shorebirds—

Delaware Bay, located between Delaware and New Jersey, is a staging site for shorebirds that migrate between South America and the Arctic. As much as 80 percent of the population of red knots (shown here) feeds and rests at this site.

Was this article helpful?

0 0
Sirens Sleep Solution

Sirens Sleep Solution

Discover How To Sleep In Peace And Harmony In A World Full Of Uncertainty And Dramatically Improve Your Quality Of Life Today! Finally You Can Fully Equip Yourself With These “Must Have” Tools For Achieving Peace And Calmness And Live A Life Of Comfort That You Deserve!

Get My Free Ebook


Post a comment