BirdAnalyst
BBS Route · Arizona · BCR 34

Skull Valley Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 100 species recorded across 26 survey years, no longer active.

100Species 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 →
26Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1996–2024Span
2Observers

Bird Species Found on Arizona Skull Valley

Top 40 of 100 species by most recent count. Each links to its species trend.

Species recorded on the Skull Valley 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
Gambel's QuailOdontophoridae1042024-15%1998
Northern MockingbirdMimidae742024-24%1998
Mourning DoveColumbidae422024+11%1998
Cassin's KingbirdTyrannidae372024+151%1998
Spotted TowheePasserellidae312024-70%1998
Woodhouse's Scrub-JayCorvidae302024-25%1998
Ash-throated FlycatcherTyrannidae292024-11%1998
Common RavenCorvidae292024+25%1998
Western MeadowlarkIcteridae262024-23%1998
Eurasian Collared-DoveColumbidae262024+456%2007
Lark SparrowPasserellidae222024-44%1998
Greater RoadrunnerCuculidae142024+171%1999
Horned LarkAlaudidae122024-92%1998
House SparrowPasseridae102024-82%1998
European StarlingSturnidae102024-13%1999
Western KingbirdTyrannidae92024-19%1998
Juniper TitmouseParidae82023-43%1998
Red-winged BlackbirdIcteridae72024-57%1998
Canyon TowheePasserellidae72024+46%1999
Lucy's WarblerParulidae72024-35%1999
Ring-necked PheasantPhasianidae72007+250%2000
American KestrelFalconidae62024+300%1999
Say's PhoebeTyrannidae62024-12%1998
Brown-headed CowbirdIcteridae62024-59%1998
Cliff SwallowHirundinidae62024-18%1998
PhainopeplaPtiliogonatidae62024-59%1998
Western BluebirdTurdidae62022+200%2009
Barn SwallowHirundinidae62024+8%2017
Western Wood-PeweeTyrannidae52022+55%1998
Yellow-breasted ChatIcteriidae52024+125%1999
Ladder-backed WoodpeckerPicidae42024+0%1999
Black-chinned HummingbirdTrochilidae42015+50%1999
Hooded OrioleIcteridae42023-46%1998
Bullock's OrioleIcteridae42024+138%1999
House FinchFringillidae42024-71%1998
Yellow WarblerParulidae42024-41%1998
American RobinTurdidae42024+100%2009
Great-tailed GrackleIcteridae32024-44%1998
Lesser GoldfinchFringillidae32024+0%1999
Blue GrosbeakCardinalidae32024+22%1998

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