BirdAnalyst
BBS Route · North Dakota · BCR 17

Bentley Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 113 species recorded across 29 survey years, still active.

113Species 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 →
29Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1988–2024Span
2Observers

Bird Species Found on North Dakota Bentley

Top 40 of 113 species by most recent count. Each links to its species trend.

Species recorded on the Bentley 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 BlackbirdIcteridae2302024+290%1990
Western MeadowlarkIcteridae2162024+43%1990
Ring-necked PheasantPhasianidae1812024+158%1990
Brown-headed CowbirdIcteridae1672024+85%1990
Mourning DoveColumbidae1202024+313%1990
Canada GooseAnatidae103202423×2007
Horned LarkAlaudidae812024+14%1990
RedheadAnatidae67202367×1989
Bank SwallowHirundinidae662024+988%1990
Eastern KingbirdTyrannidae342024+70%1990
Cliff SwallowHirundinidae342024-68%1990
Sharp-tailed GrousePhasianidae282024+560%1997
BobolinkIcteridae24202418×1990
American RobinTurdidae232024+64%1990
House SparrowPasseridae192024-93%1990
Upland SandpiperScolopacidae182024+110%1990
Grasshopper SparrowPasserellidae182024+84%1990
MallardAnatidae172024+8%1990
Rock PigeonColumbidae172024+200%1992
Yellow-headed BlackbirdIcteridae152024+143%1990
Wilson's SnipeScolopacidae142024+520%1994
Cedar WaxwingBombycillidae132008+550%2007
Marbled GodwitScolopacidae122024+125%1993
Gray PartridgePhasianidae112024+260%1990
American GoldfinchFringillidae92023-21%1992
European StarlingSturnidae82024+15%1992
Yellow WarblerParulidae82024+71%1990
Tree SwallowHirundinidae82018+300%2017
KilldeerCharadriidae72024+37%1990
Common GrackleIcteridae72024-63%1990
Chestnut-collared LongspurCalcariidae72024-7%1990
Lark BuntingPasserellidae72024-97%1990
Barn SwallowHirundinidae72024-9%1990
Spotted SandpiperScolopacidae62016+500%1988
Say's PhoebeTyrannidae62024-20%1990
Vesper SparrowPasserellidae62024+150%1998
Red-eyed VireoVireonidae62023+80%2012
Black-billed MagpieCorvidae52001+400%1996
Blue-winged TealAnatidae42024-17%1990
Western KingbirdTyrannidae42024+43%1990

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