BirdAnalyst
BBS Route · Iowa · BCR 22

Mt Hamill Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 114 species recorded across 54 survey years, still active.

114Species 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 →
54Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1967–2025Span
5Observers

Bird Species Found on Iowa Mt Hamill

Top 40 of 114 species by most recent count. Each links to its species trend.

Species recorded on the Mt Hamill 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 BlackbirdIcteridae4052025+181%1969
American RobinTurdidae1232025+193%1969
European StarlingSturnidae992025+37%1969
Mourning DoveColumbidae712025+96%1969
American CrowCorvidae622025+423%1969
Eastern MeadowlarkIcteridae412025-27%1969
DickcisselCardinalidae342025-22%1969
Indigo BuntingCardinalidae312025+182%1969
Northern CardinalCardinalidae302025+232%1969
Barn SwallowHirundinidae282025+60%1969
House SparrowPasseridae282025-59%1969
Northern House WrenTroglodytidae282025+25%1969
Common YellowthroatParulidae242025+136%1969
Brown-headed CowbirdIcteridae222025+47%1969
Song SparrowPasserellidae222025+213%1969
KilldeerCharadriidae20202512×1972
Gray CatbirdMimidae202025+880%1969
Eastern KingbirdTyrannidae182025+54%1969
Brown ThrasherMimidae172025+63%1969
Warbling VireoVireonidae162025+600%1970
Baltimore OrioleIcteridae142025+48%1969
American GoldfinchFringillidae142025+73%1969
Common GrackleIcteridae132025-91%1969
Red-headed WoodpeckerPicidae112025-11%1969
Blue JayCorvidae112025-47%1969
Rose-breasted GrosbeakCardinalidae102025+250%1969
Eastern BluebirdTurdidae82025+115%1969
Eastern Wood-PeweeTyrannidae72025+63%1969
Red-bellied WoodpeckerPicidae62025+67%1969
Field SparrowPasserellidae62025-40%1969
Northern BobwhiteOdontophoridae52025-77%1969
Downy WoodpeckerPicidae52025-13%1969
Chipping SparrowPasserellidae52025+275%1970
Tufted TitmouseParidae52025-42%1969
White-breasted NuthatchSittidae52025+140%1971
Ring-necked PheasantPhasianidae52025-48%1973
Blue-gray GnatcatcherPolioptilidae52025-25%1981
Ruby-throated HummingbirdTrochilidae52025+100%1995
Canada GooseAnatidae52025-3%2005
BobolinkIcteridae42025+80%1969

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