BirdAnalyst
BBS Route · Pennsylvania · BCR 28

Berwick Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 120 species recorded across 35 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 →
35Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1985–2024Span
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
American RobinTurdidae782024+9%1987
European StarlingSturnidae522024-23%1987
Chipping SparrowPasserellidae422024-26%1987
Common GrackleIcteridae372024-31%1987
Gray CatbirdMimidae342024+31%1987
Mourning DoveColumbidae312024+55%1987
Red-winged BlackbirdIcteridae302024-26%1987
Northern CardinalCardinalidae292024+28%1987
Song SparrowPasserellidae272024-36%1987
Red-eyed VireoVireonidae242024+22%1987
Canada GooseAnatidae222024-49%1995
House FinchFringillidae212024-2%1987
Tufted TitmouseParidae212024+15%1987
Indigo BuntingCardinalidae192024-7%1987
Barn SwallowHirundinidae192024-52%1987
Carolina WrenTroglodytidae172024+640%1988
American CrowCorvidae162024-53%1987
American GoldfinchFringillidae142024-44%1987
Field SparrowPasserellidae142024-5%1987
Red-bellied WoodpeckerPicidae142024+275%1997
Blue JayCorvidae132024+24%1987
Common YellowthroatParulidae122024-42%1987
Eastern BluebirdTurdidae112024+475%1987
Tree SwallowHirundinidae112024+13%1988
Eastern PhoebeTyrannidae102024+24%1987
Northern House WrenTroglodytidae102024-39%1987
Common MerganserAnatidae91993n/an/a
Eastern TowheePasserellidae82024+114%1987
OvenbirdParulidae82024+3%1987
House SparrowPasseridae82024-60%1987
Northern MockingbirdMimidae82024+100%1987
White-breasted NuthatchSittidae82024+13%1987
Wood ThrushTurdidae82024-41%1987
Eastern Wood-PeweeTyrannidae72024+21%1987
Brown-headed CowbirdIcteridae72024-32%1987
Cedar WaxwingBombycillidae72024-32%1987
Rock PigeonColumbidae62024+163%1987
Eastern MeadowlarkIcteridae62024-58%1987
Brown ThrasherMimidae62024+325%1993
KilldeerCharadriidae52024+0%1987

Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22. A route is a sample, not a census.