BirdAnalyst
BBS Route · Alabama · BCR 27

Liberty Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 101 species recorded across 54 survey years, still active.

101Species 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 →
54Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1966–2022Span
4Observers

Bird Species Found on Alabama Liberty

Top 40 of 101 species by most recent count. Each links to its species trend.

Species recorded on the Liberty 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
Purple MartinHirundinidae552022+237%1968
American CrowCorvidae352022+3%1968
White-eyed VireoVireonidae342022+246%1968
Northern CardinalCardinalidae312022-49%1968
Indigo BuntingCardinalidae302022-43%1968
Barn SwallowHirundinidae302022+750%1971
Northern MockingbirdMimidae202022-59%1968
Pine WarblerParulidae192022+280%1969
Blue-gray GnatcatcherPolioptilidae172022+455%1977
Yellow-breasted ChatIcteriidae162022-77%1968
Cliff SwallowHirundinidae162022+90%2017
Red-eyed VireoVireonidae142022-13%1968
Red-bellied WoodpeckerPicidae122022-19%1968
Mourning DoveColumbidae112022-77%1968
Eastern PhoebeTyrannidae112022+500%1978
Rock PigeonColumbidae112007+50%1987
Eastern BluebirdTurdidae92022-13%1969
Blue JayCorvidae82022-63%1968
Red-winged BlackbirdIcteridae82022-68%1968
Prairie WarblerParulidae72022+111%1968
Carolina WrenTroglodytidae72022-78%1968
Black VultureCathartidae72022+11%1995
Eastern MeadowlarkIcteridae62022-83%1968
Carolina ChickadeeParidae62022+46%1968
Yellow-billed CuckooCuculidae52022-5%1968
Summer TanagerCardinalidae52022+46%1968
Common YellowthroatParulidae52022-81%1968
Tufted TitmouseParidae52022+24%1968
Wood ThrushTurdidae52022-70%1968
Great Crested FlycatcherTyrannidae42022+33%1968
Chipping SparrowPasserellidae42022+144%1968
Pileated WoodpeckerPicidae32022+33%1968
Eastern KingbirdTyrannidae32022-46%1968
Acadian FlycatcherTyrannidae32022+0%1970
Brown ThrasherMimidae32022-28%1968
Turkey VultureCathartidae32022+0%1979
Great Blue HeronArdeidae32022+67%1980
Great EgretArdeidae32022+129%2011
Eurasian Collared-DoveColumbidae32021+50%2006
Eastern Wood-PeweeTyrannidae22022-69%1968

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