BirdAnalyst
BBS Route · Pennsylvania · BCR 28

Berwick Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 120 species recorded across 36 survey years, still active.

120Species 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 →
36Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1985–2025Span
5Observers

Bird Species Found on Pennsylvania Berwick

Top 40 of 120 species by most recent count. Each links to its species trend.

Species recorded on the Berwick 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 StarlingSturnidae1632025+40%1987
American RobinTurdidae742025+6%1987
Common GrackleIcteridae562025-24%1987
Red-winged BlackbirdIcteridae552025-14%1987
Gray CatbirdMimidae402025+55%1987
Song SparrowPasserellidae392025-24%1987
Chipping SparrowPasserellidae362025-17%1987
Red-eyed VireoVireonidae292025+29%1987
Indigo BuntingCardinalidae222025+5%1987
Canada GooseAnatidae222024-49%1995
American CrowCorvidae212025-61%1987
Turkey VultureCathartidae192025+775%1997
Northern CardinalCardinalidae192025+25%1987
Mourning DoveColumbidae182025+35%1987
Barn SwallowHirundinidae172025-48%1987
Carolina WrenTroglodytidae172025+880%1988
Field SparrowPasserellidae162025+8%1987
Cedar WaxwingBombycillidae162025-19%1987
OvenbirdParulidae162025+23%1987
Tufted TitmouseParidae162025+22%1987
Blue JayCorvidae142025+18%1987
American GoldfinchFringillidae132025-41%1987
Eastern TowheePasserellidae132025+286%1987
Northern House WrenTroglodytidae122025-34%1987
House SparrowPasseridae112025-64%1987
Brown-headed CowbirdIcteridae102025-36%1987
Downy WoodpeckerPicidae92025+17%1987
Scarlet TanagerCardinalidae92025+23%1987
Common YellowthroatParulidae92025-51%1987
Northern MockingbirdMimidae92025+88%1987
White-breasted NuthatchSittidae92025+56%1987
Common MerganserAnatidae91993n/an/a
KilldeerCharadriidae82025+56%1987
House FinchFringillidae82025-11%1987
Eastern BluebirdTurdidae82025+500%1987
Red-bellied WoodpeckerPicidae82025+275%1997
Eastern MeadowlarkIcteridae62024-58%1987
Yellow WarblerParulidae62025+6%1987
Brown ThrasherMimidae62025+325%1993
Wood ThrushTurdidae62025-29%1987

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