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 is building and installing nest boxes locally to provide breeding habitat for this cavity nesting species. In addition to building nest boxes, we are periodically monitoring the boxes to collect data for the Cornell Lab of Ornithology’s NestWatch.

This program is funded by Calvert County Natural Resources.


How You can Help

  • Become a volunteer and help monitor nest boxes at our parks.
  • We are seeking Calvert County landowners who would like to have a nest box installed on their property. Property requirements are:
    • Heavily forested area along a stream or swamp
    • Poles to mount boxes 5-8 feet high 
    • Access to nest box for monitoring purposes


Nest Box Locations

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

Volunteer Opportunities

06/29/2018 2:00 PM • Ward Farm Recreation and Nature Park
07/03/2018 9:30 AM • Ward Farm Recreation and Nature Park
07/17/2018 10:00 AM • Battle Creek Cypress Swamp

Other Bird Research Projects

Learn about our other Bird Research Projects


Calvert Nature Society is dedicated to the protection and preservation of Calvert County‚Äôs natural heritage and the creation of an environmentally literate and aware community. We provide opportunities for appreciation and understanding of our natural world through our outreach initiatives and in support of the mission of the Calvert County Natural Resources Division.  The Society is a 501(c)3 organization.

Copyright Calvert Nature Society.
Mailing address: PO Box 122, Port Republic, MD 20676. info@calvertparks.org
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