BirdAnalyst
BBS Route · California · BCR 32

Moraga Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 115 species recorded across 36 survey years, still active.

115Species 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 →
1972–2024Span
8Observers

Bird Species Found on California Moraga

Top 40 of 115 species by most recent count. Each links to its species trend.

Species recorded on the Moraga 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
Canada GooseAnatidae752024+564%1995
House FinchFringillidae562024-32%1974
Tree SwallowHirundinidae362024+500%2002
European StarlingSturnidae352024+87%1974
Brewer's BlackbirdIcteridae322024-93%1974
California Scrub-JayCorvidae282024-51%1974
Red-winged BlackbirdIcteridae272024-68%1974
Chestnut-backed ChickadeeParidae272024-34%1974
Acorn WoodpeckerPicidae232024+500%1977
Turkey VultureCathartidae212024+113%1974
American RobinTurdidae212024+107%1974
BushtitAegithalidae192024-18%1974
MallardAnatidae192023+322%1998
American CrowCorvidae182024+656%1975
Common RavenCorvidae172024+825%2002
Mourning DoveColumbidae152024-51%1974
White-breasted NuthatchSittidae152024+200%1986
Red-tailed HawkAccipitridae132024+79%1974
Nuttall's WoodpeckerPicidae132024+39%1974
Spotted TowheePasserellidae132024-69%1974
Oak TitmouseParidae122024-49%1974
Steller's JayCorvidae112024+236%1974
Western MeadowlarkIcteridae92024-85%1974
Band-tailed PigeonColumbidae82024+100%1974
Bewick's WrenTroglodytidae82024+27%1974
Lesser GoldfinchFringillidae72024-45%1974
California TowheePasserellidae72024-71%1974
Violet-green SwallowHirundinidae72024+40%1977
House SparrowPasseridae62023-86%1974
Northern Rough-winged SwallowHirundinidae62023+0%1987
Brown-headed CowbirdIcteridae62024+44%1979
Northern House WrenTroglodytidae62019+200%2002
Anna's HummingbirdTrochilidae52024+75%1974
WrentitSylviidae52024-70%1974
Rock PigeonColumbidae52024-71%1977
Western BluebirdTurdidae52024-7%1975
Double-crested CormorantPhalacrocoracidae52024+122%2000
KilldeerCharadriidae42024+40%1975
Ash-throated FlycatcherTyrannidae42024-42%1974
Red-shouldered HawkAccipitridae42024+40%1999

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