BirdAnalyst
BBS Route · Iowa · BCR 22

College Spgs 2 Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 86 species recorded across 18 survey years, still active.

86Species 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 →
18Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
2005–2023Span
2Observers

Bird Species Found on Iowa College Spgs 2

Top 40 of 86 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
Red-winged BlackbirdIcteridae1432023-31%2007
DickcisselCardinalidae1272023+24%2007
American RobinTurdidae782023+31%2007
Mourning DoveColumbidae742023+21%2007
Northern BobwhiteOdontophoridae512023+165%2007
Northern CardinalCardinalidae382023+354%2007
Brown-headed CowbirdIcteridae372023+19%2007
Common GrackleIcteridae302023-71%2007
Northern House WrenTroglodytidae302023+164%2007
Ring-necked PheasantPhasianidae262023-14%2007
Western MeadowlarkIcteridae252023-62%2007
American GoldfinchFringillidae252023+24%2007
Common YellowthroatParulidae252023+50%2007
Barn SwallowHirundinidae212023-37%2007
Gray CatbirdMimidae212023+382%2008
Chipping SparrowPasserellidae192023-10%2007
European StarlingSturnidae182023-45%2007
Baltimore OrioleIcteridae172023-36%2007
Indigo BuntingCardinalidae172023+233%2007
Cliff SwallowHirundinidae172023+232%2009
American CrowCorvidae142023+330%2007
Eurasian Collared-DoveColumbidae142023+640%2013
Eastern KingbirdTyrannidae132023-20%2007
House SparrowPasseridae132023-32%2007
Red-headed WoodpeckerPicidae112023+59%2007
Warbling VireoVireonidae112023+107%2007
Eastern MeadowlarkIcteridae92023+53%2007
Brown ThrasherMimidae92023-35%2007
KilldeerCharadriidae82022+36%2007
Rose-breasted GrosbeakCardinalidae82023+100%2008
Song SparrowPasserellidae72023+242%2007
Yellow WarblerParulidae72023+425%2007
Blue JayCorvidae52023-12%2007
Rock PigeonColumbidae52023+250%2009
Lark SparrowPasserellidae42023+20%2007
Field SparrowPasserellidae42023+190%2007
White-breasted NuthatchSittidae42022+20%2012
Blue GrosbeakCardinalidae42022+300%2018
Orchard OrioleIcteridae32023-29%2007
Cedar WaxwingBombycillidae32023+20%2010

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