Name:Rappahannock River Valley NWR
Type:National Wildlife Refuge
State:VA
Survey sites:268
BCR: New England/Mid-Atlantic Coast, Southeastern Coastal Plain
PIF Physiogr. Reg.: Mid Atlantic Coastal Plain
Survey Years:2000-2011
Contact:Sandy Spencer
Studies:5
More: Inventory | List of Points with Coodinates

Studies

Study name: Breeding Bird Survey 10 minute/habitat based
  Start year:2009
  Purpose:
  Field Method:0,1,2,...,9min w/ 25,50,100,>100m (Knutson 2008)
  Surveys:

Survey year	Points surveyed	Surveys
2009	103	1.95 per point
2010	22	2.00 per point
2011	66	2.03 per point

Study name: Breeding bird survey/habitat-based
  Start year:2007   End year:2008
  Purpose:
  Field Method:3,5min w/ 50,>50m (NWRS Region 5 Landbird)
  Surveys:

Survey year	Points surveyed	Surveys
2000	95	1.82 per point
2001	160	2.03 per point
2002	104	2.00 per point
2003	73	2.00 per point
2004	90	2.00 per point
2005	90	2.00 per point
2006	101	1.91 per point
2007	79	1.97 per point
2008	105	1.99 per point

Study name: Grassland bird double observer
  Start year:2012
  Purpose:Assess habitat use and density of obligate grassland birds, especially focal species, Grasshopper Sparrow
  Field Method:3,5min w/ 100,>100m (NWRS Region 5 Grassland Bird)
  Surveys:

Survey year	Points surveyed	Surveys
	0	No surveys

Study name: Grassland bird double observer pilot (2011)
  Start year:2011   End year:2011
  Purpose:Assess habitat use and density of obligate grassland birds, especially focal species, Grasshopper Sparrow
  Field Method:5min w/ 100,>100m (NWRS Region 5 Grassland Bird, simplified)
  Surveys:

Survey year	Points surveyed	Surveys
2011	23	2.00 per point

Study name: Marshbird Survey
  Start year:2002
  Purpose:
  Field Method:SecretiveMarshbird (Conway)
  Surveys:

Survey year	Points surveyed	Surveys
2001	9	2.00 per point
2002	9	2.00 per point
2003	9	3.00 per point
2004	9	3.00 per point
2005	10	1.90 per point
2006	6	2.00 per point
2007	14	3.00 per point
2008	5	1.00 per point
2009	6	1.00 per point