BirdAnalyst
BBS Route · Pennsylvania · BCR 28

Odin Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 102 species recorded across 41 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 →
41Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1973–2024Span
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 VireoVireonidae1072024+20%1975
OvenbirdParulidae752024+138%1975
Chestnut-sided WarblerParulidae48202412×1978
Eastern TowheePasserellidae352024+6%1975
Yellow-bellied SapsuckerPicidae252024+35%1990
Common YellowthroatParulidae212024+107%1975
Black-capped ChickadeeParidae192024+364%1975
Black-throated Green WarblerParulidae18202413×1984
American RobinTurdidae182024+157%1975
Indigo BuntingCardinalidae172024-17%1975
VeeryTurdidae152024-9%1975
Hermit ThrushTurdidae142024+255%1975
Black-throated Blue WarblerParulidae142024+35%1991
Eastern Wood-PeweeTyrannidae112024-50%1975
American CrowCorvidae112024+400%1975
Scarlet TanagerCardinalidae112024-12%1975
Cedar WaxwingBombycillidae112024+144%1979
Black-and-white WarblerParulidae112024+275%1982
Hooded WarblerParulidae112024+160%1994
Gray CatbirdMimidae102024+100%1975
Blackburnian WarblerParulidae102024+400%1979
MallardAnatidae102017+100%2012
Blue-headed VireoVireonidae92024+567%1975
American RedstartParulidae92024-76%1975
Mourning DoveColumbidae92024+367%1990
Blue JayCorvidae82024+70%1976
Song SparrowPasserellidae82024+6%1975
Pileated WoodpeckerPicidae72024+80%1975
Brown-headed CowbirdIcteridae72015+233%1980
BobolinkIcteridae52024+200%1976
White-breasted NuthatchSittidae52024+125%1975
Yellow-billed CuckooCuculidae42017+150%1982
Eastern PhoebeTyrannidae42024+33%1975
Least FlycatcherTyrannidae42024-87%1975
Rose-breasted GrosbeakCardinalidae42024-40%1975
Tree SwallowHirundinidae42015+117%1995
Downy WoodpeckerPicidae42024+200%1983
Winter WrenTroglodytidae42024+40%1995
Mourning WarblerParulidae42024+100%1996
Red-winged BlackbirdIcteridae32024-82%1975

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