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Prothonotary Warbler Nest Box Study

Prothonotary Warblers migrate to Central and South America during the winter. Even though these warblers are labeled as a species of least concern by IUCN, their local breeding populations are in danger. Because Prothonotary Warblers have specific habitat requirements, they are extremely susceptible to habitat loss.

Calvert County Natural Resources has installed nest boxes locally to provide breeding habitat for this cavity nesting species. Annually, during the nesting season we monitor the boxes to collect data for the Cornell Lab of Ornithology’s NestWatch.

This program is funded by Calvert County Natural Resources with support from the Calvert Nature Society.

Nest Box Locations

  • Battle Creek Cypress Swamp
  • Flag Ponds Nature Park
  • Ward Farm Recreation and Nature Park

How You can Help

Track banded Prothonotary Warblers in our park while you hike the boardwalk. Prothonotary Warbler Project Observation Form (pdf)

Become a volunteer and help monitor nest boxes at our parks.

Other Bird Research Projects

Learn about our other Bird Research Projects

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