NOAA
Noaa: Estuaries 101 Curriculum: Bountiful Birds
Learn about different species of birds that make the estuary their home, and why the estuary is an important stopover for others. Includes teacher and student materials for download.
Cornell Lab of Ornithology
Cornell Lab of Ornithology: American Oystercatcher
This concise features the following topics: cool facts, description, similar species, range, conservation status, and other names. Listen to the sounds of this bird on this site as well.