BirdAnalyst
BBS Route · Virginia · BCR 28

Nat Tunnel Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 103 species recorded across 40 survey years, still active.

103Species RecordedSpecies recordedDistinct species detected on standard-protocol BBS runs here across all years on record — a measure of survey breadth, not a complete checklist.Full methodology →
40Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1981–2025Span
5Observers

Bird Species Found on Virginia Nat Tunnel

Top 40 of 103 species by most recent count. Each links to its species trend.

Species recorded on the Nat Tunnel route.
Recent countThe raw number of individuals recorded on this route in its most recent survey year. A single-route tally, not a trend.Full methodology →TrendPercent change in the route-weighted abundance index between a smoothed baseline window and the most recent one. It tracks direction, not absolute population.Full methodology →Baseline yearThe first year of the smoothed window the trend is measured from. An earlier baseline means a longer record stands behind the number.Full methodology →History
Northern CardinalCardinalidae1052025+251%1983
Red-eyed VireoVireonidae592025+57%1983
American CrowCorvidae582025+50%1983
American GoldfinchFringillidae552025+246%1983
Tufted TitmouseParidae552025+203%1983
American RobinTurdidae352025+56%1983
Song SparrowPasserellidae332025-24%1983
Eastern TowheePasserellidae332025+22%1983
Carolina WrenTroglodytidae302025+147%1983
Canada GooseAnatidae282000n/an/a
Indigo BuntingCardinalidae272025-38%1983
Field SparrowPasserellidae252025-28%1983
Chipping SparrowPasserellidae202025+72%1983
Carolina ChickadeeParidae182025+169%1983
Mourning DoveColumbidae132025+115%1983
Red-winged BlackbirdIcteridae132025+50%1983
OvenbirdParulidae132025+93%1983
Wood ThrushTurdidae132025+24%1983
Blue JayCorvidae122025-6%1983
Eastern MeadowlarkIcteridae112025+62%1983
Hooded WarblerParulidae112025+200%1983
White-eyed VireoVireonidae102025+0%1983
Northern ParulaParulidae102025+92%1983
Turkey VultureCathartidae92025+325%1989
Eastern PhoebeTyrannidae92025+67%1983
Acadian FlycatcherTyrannidae92025+64%1984
European StarlingSturnidae92025+124%1983
Blue-gray GnatcatcherPolioptilidae82025-14%1983
Northern MockingbirdMimidae82025+440%1984
Yellow-throated WarblerParulidae82025+367%1993
Barn SwallowHirundinidae72025-57%1983
Black-and-white WarblerParulidae72025+150%1984
Red-bellied WoodpeckerPicidae72025+317%1986
Cedar WaxwingBombycillidae62025+11%1984
Northern House WrenTroglodytidae62025-23%1998
Eastern BluebirdTurdidae52025+25%1983
Yellow-throated VireoVireonidae52025+14%1985
House FinchFringillidae52024+40%2002
Eastern KingbirdTyrannidae42025-18%1983
Scarlet TanagerCardinalidae42025-44%1984

Source: USGS North American Breeding Bird Survey, retrieved 2026-08-14. A route is a sample, not a census.