BirdAnalyst
BBS Route · Arizona · BCR 33

Willow Beach 2 Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 47 species recorded across 16 survey years, still active.

47Species 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 →
16Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
2002–2025Span
5Observers

Bird Species Found on Arizona Willow Beach 2

Top 40 of 47 species by most recent count. Each links to its species trend.

Species recorded on the Willow Beach 2 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
Horned LarkAlaudidae322025+100%2006
Black-throated SparrowPasserellidae302025+54%2005
Red-winged BlackbirdIcteridae112018n/an/a
Double-crested CormorantPhalacrocoracidae72017+40%2016
Costa's HummingbirdTrochilidae62019n/an/a
VerdinRemizidae52024-7%2009
Common RavenCorvidae42025+100%2006
PhainopeplaPtiliogonatidae42025-13%2009
House SparrowPasseridae42022-11%2018
Pied-billed GrebePodicipedidae42021+33%2018
Brown-headed CowbirdIcteridae42018n/an/a
Ash-throated FlycatcherTyrannidae32025-62%2005
Black-tailed GnatcatcherPolioptilidae32025+11%2005
American CootRallidae32018+0%2017
Yellow WarblerParulidae32025+200%2017
MallardAnatidae22024+67%2006
House FinchFringillidae22025+200%2011
Loggerhead ShrikeLaniidae22022+67%2006
Northern MockingbirdMimidae22025-74%2010
Cactus WrenTroglodytidae22017+50%2009
Black-chinned HummingbirdTrochilidae22021+33%2017
Black PhoebeTyrannidae22018+0%2016
Cliff SwallowHirundinidae22025-65%2018
Lucy's WarblerParulidae22018+0%2017
Red-tailed HawkAccipitridae12025-20%2006
Turkey VultureCathartidae12025-77%2009
Western KingbirdTyrannidae12024+22%2006
Mourning DoveColumbidae12025-78%2007
Say's PhoebeTyrannidae12024-50%2007
Bullock's OrioleIcteridae12025+0%2005
Gambel's QuailOdontophoridae12024+100%2009
American KestrelFalconidae12019-50%2006
Greater RoadrunnerCuculidae12022-20%2017
Great-tailed GrackleIcteridae12019+757%2010
Crissal ThrasherMimidae12016-60%2009
Hooded OrioleIcteridae12025+0%2007
Eurasian Collared-DoveColumbidae12009n/an/a
Anna's HummingbirdTrochilidae12024+850%2018
Northern Rough-winged SwallowHirundinidae12019-93%2017
Rock WrenTroglodytidae12022-11%2018

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