BirdAnalyst
BBS Route · South Dakota · BCR 17

Isabel Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 61 species recorded across 5 survey years, still active.

61Species 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 →
5Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1990–2015Span
4Observers

Bird Species Found on South Dakota Isabel

Top 40 of 61 species by most recent count. Each links to its species trend.

Species recorded on the Isabel 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
Common GrackleIcteridae1812015+320%2009
Red-winged BlackbirdIcteridae1592015+386%2009
Barn SwallowHirundinidae1342015+188%2009
Mourning DoveColumbidae1152015+213%2009
Tree SwallowHirundinidae882015+343%2009
Lark BuntingPasserellidae862015-16%2009
Brown-headed CowbirdIcteridae832015+72%2009
Western MeadowlarkIcteridae732015-22%2009
KilldeerCharadriidae632015+184%2009
Ring-necked PheasantPhasianidae612015+712%2009
MallardAnatidae452015+138%2011
Vesper SparrowPasserellidae412015+282%2011
Upland SandpiperScolopacidae402015+411%2009
American RobinTurdidae392015+617%2009
Chipping SparrowPasserellidae362015+260%2009
Western KingbirdTyrannidae292015+147%2009
Grasshopper SparrowPasserellidae282015+28%2009
Eastern KingbirdTyrannidae272015+48%2009
Loggerhead ShrikeLaniidae26201513×1990
Cliff SwallowHirundinidae232015-23%2009
Rock PigeonColumbidae212015+250%1990
Horned LarkAlaudidae192015-60%2009
American CootRallidae19201519×2011
Marbled GodwitScolopacidae18201518×2009
BobolinkIcteridae172015+467%2013
DickcisselCardinalidae162013+0%2011
Common YellowthroatParulidae142015+600%1990
Savannah SparrowPasserellidae112015-15%2009
Field SparrowPasserellidae102015+400%1990
Red-tailed HawkAccipitridae82015+200%2011
GadwallAnatidae72015+40%2011
Northern PintailAnatidae72015+600%2011
House SparrowPasseridae62013-14%1990
Yellow-headed BlackbirdIcteridae52015+67%1990
Brown ThrasherMimidae52013+60%2009
American CrowCorvidae42013+100%1990
Yellow WarblerParulidae42015+15%2011
Brewer's BlackbirdIcteridae42011n/an/a
Canada GooseAnatidae32015+50%1990
Swainson's HawkAccipitridae32015+50%1990

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