BirdAnalyst
BBS Route · California · BCR 32

Moraga Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 115 species recorded across 37 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 →
37Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1972–2025Span
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 GooseAnatidae572025+943%1995
House FinchFringillidae552025-13%1974
Chestnut-backed ChickadeeParidae432025+23%1974
Lesser GoldfinchFringillidae422025+10%1974
Cliff SwallowHirundinidae402025-64%1974
American CrowCorvidae372025+867%1975
Spotted TowheePasserellidae322025-64%1974
BushtitAegithalidae282025-5%1974
California Scrub-JayCorvidae252025-46%1974
Oak TitmouseParidae232025-12%1974
Acorn WoodpeckerPicidae232025+689%1977
American RobinTurdidae192025+107%1974
MallardAnatidae192023+322%1998
Turkey VultureCathartidae132025+133%1974
Violet-green SwallowHirundinidae132025+120%1977
Red-tailed HawkAccipitridae122025+136%1974
California TowheePasserellidae122025-67%1974
Common RavenCorvidae122025+950%2002
European StarlingSturnidae112025+79%1974
Tree SwallowHirundinidae112025+643%2002
Mourning DoveColumbidae102025-56%1974
Steller's JayCorvidae102025+209%1974
White-breasted NuthatchSittidae102025+300%1986
Western MeadowlarkIcteridae92024-85%1974
Bewick's WrenTroglodytidae82025+19%1974
Black PhoebeTyrannidae72025+367%1975
Brewer's BlackbirdIcteridae62025-93%1974
Brown-headed CowbirdIcteridae62024+44%1979
Northern House WrenTroglodytidae62019+200%2002
Band-tailed PigeonColumbidae52025+113%1974
Nuttall's WoodpeckerPicidae52025+11%1974
Anna's HummingbirdTrochilidae52025+83%1974
Barn SwallowHirundinidae52025-36%1975
Double-crested CormorantPhalacrocoracidae52024+122%2000
Wild TurkeyPhasianidae52025+39%2009
Ash-throated FlycatcherTyrannidae42024-42%1974
Red-winged BlackbirdIcteridae42025-78%1974
Northern MockingbirdMimidae42025-85%1974
Western BluebirdTurdidae42025+0%1975
Cassin's VireoVireonidae42011+40%1987

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