Streamside bird monitoring in the Eastern Rivers and Mountains Network: Delaware Water Gap National Recreation Area 2007–2019
Marshall MR. 2021. Streamside bird monitoring in the Eastern Rivers and Mountains Network: Delaware Water Gap National Recreation Area 2007–2019. Natural Resource Report. NPS/ERMN/NRR—2021/2326. National Park Service. Fort Collins, Colorado. https://doi.org/10.36967/nrr-2288147
This report summarizes the first 12 years (2007 to 2019) of monitoring the streamside bird community at Delaware Water Gap National Recreation Area (Delaware Water Gap NRA). During that time period 13 observers conducted 3,970 point count surveys detecting 33,263 individual birds at 216 point count stations within the park. Delaware Water Gap NRA contains a rich and diverse streamside bird community with a total of 112 species detected; 87 of which were target species and presumed to be breeding in the park during summer months. The majority were forest-associated species including forest interior species whose life-histories depend on large tracts of mature, unfragmented, deciduous forest and forest generalist species. However, several abundant species were associated with early-successional forests, shrubby fields, and suburban landscapes reflecting the mixed vegetation/habitat structure at the park including at the point count stations. Twenty-three species overall and three of the five most abundant species were of conservation importance in the Appalachian Mountains bird conservation region highlighting the significance of Delaware Water Gap NRA and the surrounding landscape to avian conservation. Trends in unadjusted abundance over the period of monitoring were assessed for the 87 species in the target population (Table E-1). Trends in adjusted abundance that take into account detection probability were estimated for 53 species for which there were sufficient data.
- Type
- Published Report
- Authors
- Marshall, Matt
- Date of Issue
- 2021-11
- Publisher
- National Park Service
- DOI
- 10.36967/nrr-2288147
- Units
- DEWA , ERMN , NRSS
- Keywords
- avian conservation, bird monitoring, breeding birds, Delaware Water Gap National Recreation Area, Eastern Rivers and Mountains Network, long-term population trends, point count survey, streamside bird