BirdAnalyst
BBS Route · Iowa · BCR 22

Mt Hamill Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 114 species recorded across 53 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 →
53Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1967–2024Span
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 BlackbirdIcteridae2412024+147%1969
American RobinTurdidae842024+122%1969
European StarlingSturnidae762024-13%1969
Mourning DoveColumbidae742024+103%1969
House SparrowPasseridae592024-56%1969
American CrowCorvidae382024+333%1969
Eastern MeadowlarkIcteridae372024-47%1969
DickcisselCardinalidae312024-14%1969
Brown-headed CowbirdIcteridae272024+27%1969
Barn SwallowHirundinidae252024+35%1969
Northern CardinalCardinalidae222024+176%1969
Turkey VultureCathartidae212024+108%1969
Common YellowthroatParulidae202024+111%1969
Indigo BuntingCardinalidae182024+77%1969
Brown ThrasherMimidae182024+19%1969
Canada GooseAnatidae172023+7%2005
Northern House WrenTroglodytidae162024-10%1969
KilldeerCharadriidae152024+900%1972
Northern BobwhiteOdontophoridae152024-76%1969
Red-headed WoodpeckerPicidae142024-38%1969
Song SparrowPasserellidae142024+113%1969
Baltimore OrioleIcteridae132024+0%1969
Field SparrowPasserellidae132024-53%1969
Rock PigeonColumbidae122024-13%1972
Blue JayCorvidae122024-60%1969
Rose-breasted GrosbeakCardinalidae122024+175%1969
Gray CatbirdMimidae122024+840%1969
Eastern BluebirdTurdidae102024+77%1969
Red-bellied WoodpeckerPicidae92024+50%1969
Great Crested FlycatcherTyrannidae92024+42%1970
Common GrackleIcteridae92024-92%1969
American GoldfinchFringillidae82024-7%1969
Ring-necked PheasantPhasianidae82024-52%1973
Northern Rough-winged SwallowHirundinidae72024+29%1973
Eastern KingbirdTyrannidae62024+0%1969
Warbling VireoVireonidae62024+325%1970
Eastern PhoebeTyrannidae52024+100%1969
Cedar WaxwingBombycillidae52024+200%1981
Eastern Wood-PeweeTyrannidae42024-13%1969
Chipping SparrowPasserellidae42024+250%1970

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