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BBS Route · California · BCR 33

Niland Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 92 species recorded across 50 survey years, still active.

92Species 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 →
50Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1973–2025Span
4Observers

Bird Species Found on California Niland

Top 40 of 92 species by most recent count. Each links to its species trend.

Species recorded on the Niland 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
Red-winged BlackbirdIcteridae7702025+2%1976
Western MeadowlarkIcteridae972025+439%1976
Mourning DoveColumbidae812025+8%1976
White-faced IbisThreskiornithidae702025+225%1985
Ruddy DuckAnatidae652021-73%1980
Cliff SwallowHirundinidae602025+255%1977
Barn SwallowHirundinidae552025+47%2018
RedheadAnatidae302010-5%2005
Black PhoebeTyrannidae29202522×1983
Wood StorkCiconiidae271976n/an/a
Rock PigeonColumbidae222025+177%1983
Blue-footed BoobySulidae191974n/an/a
Eurasian Collared-DoveColumbidae182025+164%2007
Great-tailed GrackleIcteridae172025+323%1984
European StarlingSturnidae162025+94%1976
Gambel's QuailOdontophoridae162025+358%1982
Western KingbirdTyrannidae152025+23%1976
KilldeerCharadriidae142025-27%1976
Horned LarkAlaudidae142025-71%1980
American KestrelFalconidae112025+350%1979
Song SparrowPasserellidae112025+650%1984
Western Cattle-EgretArdeidae92023+124%1976
Northern Rough-winged SwallowHirundinidae92025-86%1976
Black-necked StiltRecurvirostridae82025-96%1976
Burrowing OwlStrigidae82025-29%1976
Ring-necked PheasantPhasianidae82023+129%1993
Common YellowthroatParulidae72025+29%1976
House SparrowPasseridae72024-97%1976
White-winged DoveColumbidae72025+550%1987
American AvocetRecurvirostridae62025-60%1976
Northern MockingbirdMimidae52025-15%1977
Black-throated SparrowPasserellidae51974n/an/a
Abert's TowheePasserellidae52025+213%1982
Northern PintailAnatidae42019-52%1980
Caspian TernLaridae42025-86%1977
Great Blue HeronArdeidae42025+30%1981
Cinnamon TealAnatidae42019-42%1986
Black-headed GrosbeakCardinalidae42023+167%2009
Great EgretArdeidae32025-75%1976
Lesser NighthawkCaprimulgidae32025+133%1976

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