BirdAnalyst
BBS Route · Iowa · BCR 11

Clare Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 89 species recorded across 37 survey years, still active.

89Species 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 →
37Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1967–2019Span
8Observers

Bird Species Found on Iowa Clare

Top 40 of 89 species by most recent count. Each links to its species trend.

Species recorded on the Clare 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
House SparrowPasseridae722019-18%1975
Red-winged BlackbirdIcteridae682019-40%1975
American RobinTurdidae562019+133%1975
Canada GooseAnatidae382019+49%2000
Ring-necked PheasantPhasianidae312019-48%1975
DickcisselCardinalidae302019-55%1975
Barn SwallowHirundinidae272019-33%1975
European StarlingSturnidae222019-69%1975
Common GrackleIcteridae222019-64%1975
Brown-headed CowbirdIcteridae182019-42%1975
Vesper SparrowPasserellidae162019-83%1975
American GoldfinchFringillidae152019+38%1975
Common YellowthroatParulidae142019-66%1975
KilldeerCharadriidae122019+467%1975
Song SparrowPasserellidae102019-63%1975
Rock PigeonColumbidae82019-69%1975
Cedar WaxwingBombycillidae82013+425%1999
Mourning DoveColumbidae72019-55%1975
Western MeadowlarkIcteridae72019-97%1975
Bank SwallowHirundinidae72008+53%1985
Northern House WrenTroglodytidae72019-9%1975
Baltimore OrioleIcteridae72019-38%1976
Northern BobwhiteOdontophoridae71990+133%1977
American CrowCorvidae62017-92%1975
Horned LarkAlaudidae42017-55%1975
Indigo BuntingCardinalidae42019+50%1975
Chimney SwiftApodidae42019+8%1977
Black-capped ChickadeeParidae42018+150%1978
Lark SparrowPasserellidae42019+13%1994
Sedge WrenTroglodytidae42019-39%2007
Eastern Wood-PeweeTyrannidae32019+167%1976
Blue JayCorvidae32019-50%1975
Brown ThrasherMimidae32018+46%1975
Eastern MeadowlarkIcteridae32019-71%1987
Red-eyed VireoVireonidae32019+150%2008
Tree SwallowHirundinidae32007+33%1999
Turkey VultureCathartidae32013+33%2007
Eastern KingbirdTyrannidae22019-74%1975
BobolinkIcteridae22019-74%1975
Grasshopper SparrowPasserellidae22017-70%1975

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