BirdAnalyst
BBS Route · Pennsylvania · BCR 13

Harmonsburg Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 123 species recorded across 52 survey years, still active.

123Species 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 →
52Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1966–2025Span
8Observers

Bird Species Found on Pennsylvania Harmonsburg

Top 40 of 123 species by most recent count. Each links to its species trend.

Species recorded on the Harmonsburg 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
European StarlingSturnidae1432025-32%1968
Red-winged BlackbirdIcteridae1182025-50%1968
American RobinTurdidae1042025+23%1968
Common GrackleIcteridae632025-5%1968
House SparrowPasseridae432025-47%1968
Song SparrowPasserellidae422025+25%1968
American CrowCorvidae402025+11%1968
Chimney SwiftApodidae322025+134%1968
Cedar WaxwingBombycillidae31202514×1968
Yellow WarblerParulidae252025+117%1968
Northern CardinalCardinalidae242025+253%1968
Gray CatbirdMimidae242025+95%1968
Chipping SparrowPasserellidae232025+78%1968
Mourning DoveColumbidae202025+8%1968
Barn SwallowHirundinidae202025+12%1968
Rock PigeonColumbidae192025+7%1968
Northern House WrenTroglodytidae172025+227%1968
Canada GooseAnatidae152025-56%1983
Turkey VultureCathartidae142025+100%1976
Common YellowthroatParulidae132025+26%1968
Eastern MeadowlarkIcteridae112025-74%1968
Blue JayCorvidae102025+108%1968
Baltimore OrioleIcteridae102025+59%1968
Warbling VireoVireonidae102025+246%1968
House FinchFringillidae102025+89%1989
Red-eyed VireoVireonidae92025+224%1968
Purple MartinHirundinidae82024+106%1968
Red-bellied WoodpeckerPicidae82025+520%1998
Willow FlycatcherTyrannidae72025+95%1975
Rose-breasted GrosbeakCardinalidae72025+250%1968
Eastern PhoebeTyrannidae62025+29%1968
American GoldfinchFringillidae62025-62%1968
Black-capped ChickadeeParidae62025+57%1968
Wood ThrushTurdidae62025+30%1968
Eastern BluebirdTurdidae62025+383%1970
Ruffed GrousePhasianidae61977n/an/a
KilldeerCharadriidae52025+31%1968
Eastern TowheePasserellidae52025+21%1968
American KestrelFalconidae52024+120%1972
American RedstartParulidae52025+360%1969

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