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BBS Route · Idaho · BCR 9

Henry Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 91 species recorded across 9 survey years, no longer active.

91Species 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 →
9Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1973–1983Span
2Observers

Bird Species Found on Idaho Henry

Top 40 of 91 species by most recent count. Each links to its species trend.

Species recorded on the Henry 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
Cliff SwallowHirundinidae2041983-7%1975
California GullLaridae1231983+8%1975
Franklin's GullLaridae1161981+242%1976
Tree SwallowHirundinidae931983-10%1975
American RobinTurdidae791983+6%1975
Vesper SparrowPasserellidae591983+570%1977
Sandhill CraneGruidae541983+9%1975
Brewer's SparrowPasserellidae501983+1%1975
American White PelicanPelecanidae401983+282%1979
Western MeadowlarkIcteridae391983+10%1975
Brewer's BlackbirdIcteridae381983-5%1975
Ring-billed GullLaridae371981+146%1975
European StarlingSturnidae321983+13%1975
Sage ThrasherMimidae311983+114%1975
Horned LarkAlaudidae251983-54%1975
House SparrowPasseridae221983+62%1975
Spotted SandpiperScolopacidae211981n/an/a
Yellow-headed BlackbirdIcteridae201983+10%1975
American CrowCorvidae181983+180%1975
Barn SwallowHirundinidae171983+213%1975
Black-billed MagpieCorvidae161983+38%1975
Yellow WarblerParulidae121983-23%1975
Mourning DoveColumbidae111983-5%1975
WilletScolopacidae101981+83%1976
American AvocetRecurvirostridae101981n/an/a
Northern House WrenTroglodytidae81983+300%1978
Savannah SparrowPasserellidae81983n/an/a
Northern Rough-winged SwallowHirundinidae61979+325%1975
Mountain BluebirdTurdidae61983-27%1975
Black TernLaridae61978n/an/a
Turkey VultureCathartidae51975+67%1973
American GoldfinchFringillidae51983-56%1979
Red-tailed HawkAccipitridae41983+150%1976
Brown-headed CowbirdIcteridae41983+22%1975
Green-tailed TowheePasserellidae41983+29%1976
Cinnamon TealAnatidae41981+100%1975
Rock PigeonColumbidae41979+78%1975
Western Wood-PeweeTyrannidae41983n/an/a
American KestrelFalconidae31983-36%1975
House FinchFringillidae31983+83%1977

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