An international team of scientists have banded tens of thousands of shorebirds since the mid 1990’s.  The vast majority of these birds are red knots, semipalmated sandpipers, ruddy turnstones, and sanderlings.  Color-marking these birds has resulted in a growing database of sightings along the Atlantic Flyway describing their migration routes, nesting and wintering areas.  Your observations will contribute greatly to this important information.


Click below to enter your resightings:

Once you have entered all of your data, you can simply click on Public Search, choose the correct species and flag color, then enter the marker code to see where your bird was banded and where else it has been resighted.

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Clear into the Future: a DuPont Delaware Estuary Initiative is an ongoing commitment to maintain and improve the Delaware River Estuary. The initiative focuses on using DuPont science, volunteerism, education and special projects to help preserve and protect the estuary. To learn more about "Clear into the Future", go to