NCRN RSS FeedNational Capital Region Network - Monitoring Forest Birds
Background
The National Capital Region Network (NCRN) parks are located within the Washington, D.C., metropolitan area, where suburbanization is the dominant land use trend. The associated loss, fragmentation, and degradation of forests have led to regional or local declines in populations of some forest-nesting bird species. Consequently, the forests in NCRN parks are becoming increasingly important to preservation of the region's avifauna. These forests face many threats though, including over-browsing by white-tailed deer (Odocoileus virginianus), tree diseases, insect pests, and invasive exotic plants that affect their structure, condition, and composition, reducing their quality as habitat for some bird species. In addition, birds that nest in urban areas are vulnerable to the mosquito-borne West Nile Virus, which may be impacting populations of some species. We will assesses the status and trends of these species in NCRN parks, while providing information on the dozens of other forest-nesting bird species, some of which may need conservation or management action in the future. |
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Objectives
MeasuresThe NCRN estimates annual density or indices of abundance for forest-nesting bird species. We use these estimates to calculate long-term trends in density/abundance across the network. Our hybrid monitoring design uses point-count data recorded in two distance classes ('near' and 'far'). This approach greatly simplifies the task of measuring distances: it is necessary only to determine if detected birds are within or beyond a specified distance. StatusMonitoring began in 2007 and has continued through the 2011 breeding season through a cooperative agreement with the University of Delaware, Department of Entomology and Wildlife Ecology. Contacts Related MaterialsOverview
Resource Brief - NCRN Forest Birds
Resource Brief - Birds of Antietam NB Resource Brief - Birds of Catoctin Mountain Park Resource Brief - Birds of Chesapeake & Ohio Canal NHP Resource Brief - Birds of Fort Circle Parks, Fort Dupont, Oxon Cove, & Anacostia Park Resource Brief - Birds of George Washington Mem. Pkwy Resource Brief - Birds of Greenbelt Park Resource Brief - Birds of Harpers Ferry NHP Resource Brief - Birds of Manassas NBP Resource Brief - Birds of Monocacy NB Resource Brief - Birds of Piscataway Park & Fort Washington Resource Brief - Birds of Prince William Forest Park Resource Brief - Birds of Rock Creek Park Resource Brief - Birds of Wolf Trap park for the Perf. Arts Reports
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