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BBS Route · California · BCR 32

Mesa Grande Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 119 species recorded across 48 survey years, still active.

119Species 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 →
48Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1970–2024Span
5Observers

Bird Species Found on California Mesa Grande

Top 40 of 119 species by most recent count. Each links to its species trend.

Species recorded on the Mesa Grande 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
Brewer's BlackbirdIcteridae582024+523%1972
Western MeadowlarkIcteridae432024-28%1972
Acorn WoodpeckerPicidae322024+680%1972
California Scrub-JayCorvidae312024+14%1972
Mourning DoveColumbidae282024-32%1972
Northern House WrenTroglodytidae282024+307%1972
Ash-throated FlycatcherTyrannidae232024+387%1972
Spotted TowheePasserellidae222024+9%1972
California TowheePasserellidae212024+229%1972
European StarlingSturnidae202024-59%1972
American CrowCorvidae192024-78%1972
Common RavenCorvidae172024+408%1972
House FinchFringillidae172024+34%1972
Burrowing OwlStrigidae162002n/an/a
Western KingbirdTyrannidae142024+36%1972
California QuailOdontophoridae132024+144%1972
WrentitSylviidae132024+35%1972
Violet-green SwallowHirundinidae102024+29%1972
Red-tailed HawkAccipitridae92024+122%1972
Western Wood-PeweeTyrannidae92024+40%1974
Bullock's OrioleIcteridae92024-70%1972
Yellow WarblerParulidae92024+150%1972
Bewick's WrenTroglodytidae92024+333%1973
Western BluebirdTurdidae92024+20%1972
Red-winged BlackbirdIcteridae72024-77%1972
Song SparrowPasserellidae72024+100%1973
Oak TitmouseParidae72024+100%1972
California ThrasherMimidae62024+30%1972
House SparrowPasseridae62024-17%1977
GadwallAnatidae61998n/an/a
American CootRallidae62005+500%1999
Horned LarkAlaudidae52024-79%1972
Lark SparrowPasserellidae52024-26%1972
Black-headed GrosbeakCardinalidae52024+7%1972
Northern MockingbirdMimidae52024+233%1978
White-throated SwiftApodidae52017+400%1976
Cinnamon TealAnatidae52006+25%1998
Eurasian Collared-DoveColumbidae52024+167%2012
White-breasted NuthatchSittidae42024+50%1976
Nuttall's WoodpeckerPicidae42024+200%1973

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