BirdAnalyst
BBS Route · Pennsylvania · BCR 28

Odin Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 102 species recorded across 42 survey years, still active.

102Species 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 →
42Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1973–2025Span
5Observers

Bird Species Found on Pennsylvania Odin

Top 40 of 102 species by most recent count. Each links to its species trend.

Species recorded on the Odin 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
Red-eyed VireoVireonidae982025+67%1975
OvenbirdParulidae502025+180%1975
Eastern TowheePasserellidae442025+43%1975
Chestnut-sided WarblerParulidae38202519×1978
Yellow-bellied SapsuckerPicidae342025+142%1990
Black-throated Green WarblerParulidae19202516×1984
Common YellowthroatParulidae192025+104%1975
Black-capped ChickadeeParidae172025+373%1975
Hooded WarblerParulidae162025+460%1994
Hermit ThrushTurdidae132025+264%1975
Blackburnian WarblerParulidae122025+700%1979
Cedar WaxwingBombycillidae112024+144%1979
American CrowCorvidae102025+380%1975
MallardAnatidae102017+100%2012
American RobinTurdidae92025+126%1975
Song SparrowPasserellidae82025+28%1975
Scarlet TanagerCardinalidae82025-4%1975
Gray CatbirdMimidae82025+127%1975
VeeryTurdidae82025-12%1975
Pileated WoodpeckerPicidae72025+200%1975
Brown-headed CowbirdIcteridae72015+233%1980
Indigo BuntingCardinalidae72025+4%1975
Black-throated Blue WarblerParulidae72025+22%1991
Blue JayCorvidae62025+100%1976
Mourning DoveColumbidae62025+467%1990
Eastern PhoebeTyrannidae52025+100%1975
Eastern Wood-PeweeTyrannidae52025-36%1975
Least FlycatcherTyrannidae52025-84%1975
BobolinkIcteridae52024+200%1976
Red-winged BlackbirdIcteridae52025-67%1975
American RedstartParulidae52025-67%1975
Black-and-white WarblerParulidae52025+350%1982
Downy WoodpeckerPicidae52025+333%1983
Brown CreeperCerthiidae52025-20%1993
Yellow-billed CuckooCuculidae42017+150%1982
Tree SwallowHirundinidae42015+117%1995
Chipping SparrowPasserellidae32025-59%1975
Blue-headed VireoVireonidae32025+433%1975
White-breasted NuthatchSittidae32025+125%1975
Northern CardinalCardinalidae32025+133%1980

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