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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 49 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 →
49Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1970–2025Span
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
Acorn WoodpeckerPicidae51202512×1972
Western MeadowlarkIcteridae452025+10%1972
Brewer's BlackbirdIcteridae422025+696%1972
House FinchFringillidae402025+102%1972
California Scrub-JayCorvidae342025+52%1972
American CrowCorvidae332025-64%1972
Mourning DoveColumbidae322025-16%1972
European StarlingSturnidae272025-55%1972
Spotted TowheePasserellidae222025+54%1972
California TowheePasserellidae212025+310%1972
Western KingbirdTyrannidae182025+91%1972
Violet-green SwallowHirundinidae172025+136%1972
Oak TitmouseParidae172025+227%1972
Northern House WrenTroglodytidae162025+400%1972
Burrowing OwlStrigidae162002n/an/a
Ash-throated FlycatcherTyrannidae152025+380%1972
WrentitSylviidae132025+75%1972
California QuailOdontophoridae122025+206%1972
Common RavenCorvidae112025+358%1972
Bullock's OrioleIcteridae92025-61%1972
Yellow WarblerParulidae92025+250%1972
Western BluebirdTurdidae92025+60%1972
Red-tailed HawkAccipitridae82025+144%1972
Lesser GoldfinchFringillidae82025+50%1972
Black-headed GrosbeakCardinalidae82025+43%1972
Eurasian Collared-DoveColumbidae82025+233%2012
Lark SparrowPasserellidae72025-4%1972
Song SparrowPasserellidae72025+171%1973
BushtitAegithalidae72025+0%1973
White-breasted NuthatchSittidae62025+175%1976
Blue GrosbeakCardinalidae62025-70%1989
GadwallAnatidae61998n/an/a
American CootRallidae62005+500%1999
Red-winged BlackbirdIcteridae52025-72%1972
Western TanagerCardinalidae52025-44%1975
White-throated SwiftApodidae52017+400%1976
American RobinTurdidae52025+75%1996
Cinnamon TealAnatidae52006+25%1998
Western Wood-PeweeTyrannidae42025+53%1974
California ThrasherMimidae42025+60%1972

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