BirdAnalyst
BBS Route · Arizona · BCR 16

The Gap Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 43 species recorded across 8 survey years, no longer active.

43Species 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 →
8Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1968–1976Span
4Observers

Bird Species Found on Arizona The Gap

Top 40 of 43 species by most recent count. Each links to its species trend.

Species recorded on the The Gap 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 LarkAlaudidae431976-12%1970
House FinchFringillidae381976+50%1970
Western BluebirdTurdidae271976n/an/a
Black-throated SparrowPasserellidae231976-4%1970
Common RavenCorvidae131976+5%1971
Brown-headed CowbirdIcteridae91976+9%1969
Say's PhoebeTyrannidae81976+9%1970
House SparrowPasseridae71976-57%1970
Chihuahuan RavenCorvidae71973n/an/a
Gray VireoVireonidae61973+500%1971
Gambel's QuailOdontophoridae51968n/an/a
Pinyon JayCorvidae51975+400%1969
Cliff SwallowHirundinidae41973+100%1969
Brewer's SparrowPasserellidae41973n/an/a
Mourning DoveColumbidae31976-35%1970
Black-chinned HummingbirdTrochilidae31969+200%1968
Western KingbirdTyrannidae31976+0%1968
Scott's OrioleIcteridae31975+50%1968
Lesser GoldfinchFringillidae31968n/an/a
Loggerhead ShrikeLaniidae31976+0%1968
Rock WrenTroglodytidae31976-54%1970
Cassin's KingbirdTyrannidae31974+200%1971
Sagebrush SparrowPasserellidae31971n/an/a
Ash-throated FlycatcherTyrannidae21975-40%1969
Northern MockingbirdMimidae21976-60%1973
Cactus WrenTroglodytidae21968n/an/a
VerdinRemizidae21973+100%1971
Red-winged BlackbirdIcteridae21975-50%1973
Black-headed GrosbeakCardinalidae21975n/an/a
KilldeerCharadriidae11975-67%1969
American KestrelFalconidae11971+0%1968
Chihuahuan MeadowlarkIcteridae11968n/an/a
Canyon TowheePasserellidae11968n/an/a
Bell's VireoVireonidae11973-67%1969
Curve-billed ThrasherMimidae11968n/an/a
Canyon WrenTroglodytidae11968n/an/a
Blue-gray GnatcatcherPolioptilidae11968n/an/a
Sage ThrasherMimidae11973+0%1969
Chipping SparrowPasserellidae11971+0%1970
Song SparrowPasserellidae11970n/an/a

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