BirdAnalyst
BBS Route · Illinois · BCR 22

Marshall Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 96 species recorded across 20 survey years, still active.

96Species 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 →
20Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
2001–2025Span
2Observers

Bird Species Found on Illinois Marshall

Top 40 of 96 species by most recent count. Each links to its species trend.

Species recorded on the Marshall 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 BlackbirdIcteridae2402025+113%2003
House SparrowPasseridae2132025+486%2003
European StarlingSturnidae1362025+89%2003
American RobinTurdidae892025+195%2003
Common GrackleIcteridae742025-33%2003
Mourning DoveColumbidae722025+122%2003
Barn SwallowHirundinidae652025+164%2003
Horned LarkAlaudidae562025+476%2003
Canada GooseAnatidae392025-48%2017
American CrowCorvidae372025+633%2003
Northern CardinalCardinalidae352025+400%2003
Cliff SwallowHirundinidae352025+279%2004
Song SparrowPasserellidae34202525×2004
Common YellowthroatParulidae332025+717%2003
Brown-headed CowbirdIcteridae302025+585%2004
Northern BobwhiteOdontophoridae232025+100%2003
Eastern MeadowlarkIcteridae222025+69%2003
DickcisselCardinalidae222025+500%2006
KilldeerCharadriidae212025+242%2003
Indigo BuntingCardinalidae202025+208%2003
House FinchFringillidae182025+75%2013
Great Crested FlycatcherTyrannidae172025+155%2010
Chipping SparrowPasserellidae162025+239%2003
Rock PigeonColumbidae122023-44%2010
Red-headed WoodpeckerPicidae112025+775%2003
Eastern Wood-PeweeTyrannidae112025+975%2006
Blue GrosbeakCardinalidae102025+117%2018
Wild TurkeyPhasianidae92025+133%2012
Field SparrowPasserellidae82025+386%2003
Red-bellied WoodpeckerPicidae82025+27%2011
Eastern BluebirdTurdidae72025+218%2003
Gray CatbirdMimidae72025+58%2010
Eastern PhoebeTyrannidae72025+88%2012
Eastern KingbirdTyrannidae62025+71%2010
American GoldfinchFringillidae62025-13%2003
Ring-necked PheasantPhasianidae62025+11%2011
Cedar WaxwingBombycillidae62025+256%2012
Yellow WarblerParulidae62025+57%2012
Wood ThrushTurdidae62025+300%2012
Great Blue HeronArdeidae52025+167%2010

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