BirdAnalyst
BBS Route · Iowa · BCR 22

College Spgs 2 Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 87 species recorded across 19 survey years, still active.

87Species 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 →
19Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
2005–2025Span
3Observers

Bird Species Found on Iowa College Spgs 2

Top 40 of 87 species by most recent count. Each links to its species trend.

Species recorded on the College Spgs 2 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
Northern BobwhiteOdontophoridae1042025+289%2007
Red-winged BlackbirdIcteridae1002025-40%2007
American RobinTurdidae972025+33%2007
DickcisselCardinalidae802025+12%2007
Barn SwallowHirundinidae492025-13%2007
Ring-necked PheasantPhasianidae432025-1%2007
Northern House WrenTroglodytidae292025+179%2007
Northern CardinalCardinalidae262025+317%2007
Common YellowthroatParulidae252025+48%2007
Mourning DoveColumbidae232025-9%2007
Song SparrowPasserellidae202025+225%2007
Western MeadowlarkIcteridae192025-64%2007
Indigo BuntingCardinalidae192025+293%2007
European StarlingSturnidae182023-45%2007
Eastern MeadowlarkIcteridae152025+58%2007
Brown-headed CowbirdIcteridae132025-14%2007
Chipping SparrowPasserellidae122025-8%2007
Field SparrowPasserellidae122025+190%2007
Eastern KingbirdTyrannidae102025-13%2007
American CrowCorvidae82025+260%2007
Gray CatbirdMimidae82025+300%2008
Red-bellied WoodpeckerPicidae72025-8%2007
Blue JayCorvidae62025-27%2007
Eastern BluebirdTurdidae62025-47%2007
Great Blue HeronArdeidae52025+75%2014
Rock PigeonColumbidae52023+250%2009
Cliff SwallowHirundinidae52025+184%2009
Eastern TowheePasserellidae52025+60%2012
Common GrackleIcteridae42025-82%2007
American GoldfinchFringillidae42025+9%2007
House SparrowPasseridae42025-45%2007
Brown ThrasherMimidae42025-43%2007
White-breasted NuthatchSittidae42022+20%2012
Blue GrosbeakCardinalidae42022+300%2018
Red-tailed HawkAccipitridae32025+0%2007
Orchard OrioleIcteridae32023-29%2007
Grasshopper SparrowPasserellidae32025-50%2007
Yellow WarblerParulidae32025+300%2007
Cedar WaxwingBombycillidae32025-20%2010
Bell's VireoVireonidae32023+0%2011

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