BirdAnalyst
BBS Route · California · BCR 15

Forest Hill Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 88 species recorded across 24 survey years, still active.

88Species 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 →
24Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1997–2025Span
3Observers

Bird Species Found on California Forest Hill

Top 40 of 88 species by most recent count. Each links to its species trend.

Species recorded on the Forest Hill 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
Lazuli BuntingCardinalidae432025+650%2000
Spotted TowheePasserellidae372025-14%1999
Black-headed GrosbeakCardinalidae362025+13%1999
WrentitSylviidae342022+46%1999
Western TanagerCardinalidae312025+27%1999
Acorn WoodpeckerPicidae252025+65%1999
American RobinTurdidae242025-12%1999
Steller's JayCorvidae232025-5%1999
Mourning DoveColumbidae202025+383%1999
Cassin's VireoVireonidae152025+25%1999
Lesser GoldfinchFringillidae152025-5%2000
Black-throated Gray WarblerParulidae142025-15%1999
Mountain QuailOdontophoridae122025-4%1999
Bewick's WrenTroglodytidae112025-48%1999
Red-breasted NuthatchSittidae112025+170%1999
Western Wood-PeweeTyrannidae112025+183%2001
Northern House WrenTroglodytidae72025+260%2000
Hairy WoodpeckerPicidae62025+280%2001
Band-tailed PigeonColumbidae52025-33%1999
California Scrub-JayCorvidae52025-50%1999
Orange-crowned WarblerParulidae52025-56%1999
Chipping SparrowPasserellidae52025+167%2002
California TowheePasserellidae52025+100%2001
California QuailOdontophoridae42025+267%2003
Pileated WoodpeckerPicidae42022+0%2000
Purple FinchFringillidae42025+60%1999
Hermit WarblerParulidae42025-71%1999
California ThrasherMimidae42025+40%1999
Canyon WrenTroglodytidae42025+0%1999
Oak TitmouseParidae42014+33%2000
Mountain ChickadeeParidae42025+133%2000
White-headed WoodpeckerPicidae42025+167%2007
Olive-sided FlycatcherTyrannidae32025-42%1999
Hammond's FlycatcherTyrannidae32022+40%1999
Red CrossbillFringillidae32002+50%1997
Barn SwallowHirundinidae32019+17%1999
Nashville WarblerParulidae32025-66%1999
Chestnut-backed ChickadeeParidae32005-40%1999
BushtitAegithalidae32025+75%1999
Hermit ThrushTurdidae32019-44%1999

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