BirdAnalyst
BBS Route · North Dakota · BCR 11

Abercrombie 2 Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 74 species recorded across 6 survey years, still active.

74Species 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 →
6Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
2013–2018Span
2Observers

Bird Species Found on North Dakota Abercrombie 2

Top 40 of 74 species by most recent count. Each links to its species trend.

Species recorded on the Abercrombie 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
Cliff SwallowHirundinidae2552018+66%2014
Brewer's BlackbirdIcteridae822017+450%2014
Rock PigeonColumbidae312017+2%2014
Canada GooseAnatidae272017+38%2014
Red-winged BlackbirdIcteridae262018-27%2015
Mourning DoveColumbidae222018-41%2015
House SparrowPasseridae212017+96%2014
Brown-headed CowbirdIcteridae172018-29%2015
DickcisselCardinalidae162018-3%2015
European StarlingSturnidae132016-73%2014
American RobinTurdidae122018-26%2015
MallardAnatidae112017-31%2014
Vesper SparrowPasserellidae112018-67%2015
Song SparrowPasserellidae112018+16%2015
KilldeerCharadriidae72018-53%2015
Chimney SwiftApodidae72017-35%2014
American CrowCorvidae72017-44%2014
Western MeadowlarkIcteridae72018+5%2015
Common GrackleIcteridae72017-50%2014
House FinchFringillidae72016+38%2014
Bank SwallowHirundinidae72017+185%2014
Blue JayCorvidae62016+500%2014
Savannah SparrowPasserellidae52018-41%2015
Black-capped ChickadeeParidae52016+400%2013
Northern ShovelerAnatidae52016+150%2014
LeConte's SparrowPasserellidae52018+150%2017
Horned LarkAlaudidae42017-16%2014
Yellow WarblerParulidae42017-34%2014
Least FlycatcherTyrannidae32014+200%2013
BobolinkIcteridae32018-62%2015
Yellow-headed BlackbirdIcteridae32017+50%2013
Tree SwallowHirundinidae32016-14%2014
Warbling VireoVireonidae32017-50%2014
Gray CatbirdMimidae32017+33%2015
White-breasted NuthatchSittidae32015+50%2013
Wild TurkeyPhasianidae32017-25%2014
GadwallAnatidae22013n/an/a
Wilson's SnipeScolopacidae22014+100%2013
Ring-necked PheasantPhasianidae22018-25%2014
Common YellowthroatParulidae22018-65%2015

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