BirdAnalyst
BBS Route · North Dakota · BCR 17

Gorham Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 117 species recorded across 47 survey years, still active.

117Species 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 →
47Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1968–2018Span
9Observers

Bird Species Found on North Dakota Gorham

Top 40 of 117 species by most recent count. Each links to its species trend.

Species recorded on the Gorham 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
Western MeadowlarkIcteridae1412018+0%1970
Brown-headed CowbirdIcteridae1112018+420%1970
Cliff SwallowHirundinidae1072018+209%1998
Red-winged BlackbirdIcteridae772018+172%1970
Mourning DoveColumbidae752018+147%1970
BobolinkIcteridae462018+488%1971
Savannah SparrowPasserellidae42201813×1971
Grasshopper SparrowPasserellidae422018+191%1970
Common GrackleIcteridae372018+608%1970
American RobinTurdidae372018+700%1970
MallardAnatidae302018+285%1970
Clay-colored SparrowPasserellidae272018+513%1971
Eastern KingbirdTyrannidae232018+196%1970
KilldeerCharadriidae212018+135%1970
Horned LarkAlaudidae212018-68%1970
Vesper SparrowPasserellidae192018+6%1971
Greater Sage-GrousePhasianidae181997n/an/a
Ring-necked PheasantPhasianidae162018+193%1970
Barn SwallowHirundinidae152018+26%1970
Western KingbirdTyrannidae12201811×1970
Northern House WrenTroglodytidae102018+286%1974
Tree SwallowHirundinidae102018+420%2001
CanvasbackAnatidae102016+171%1991
Cedar WaxwingBombycillidae102018+100%2010
Bank SwallowHirundinidae91996+90%1976
Wilson's SnipeScolopacidae82018+120%2002
American WigeonAnatidae82016+0%1986
Yellow WarblerParulidae72018+975%1970
Upland SandpiperScolopacidae62018+55%1970
Swainson's HawkAccipitridae62018+350%1970
European StarlingSturnidae62016+17%1970
Yellow-headed BlackbirdIcteridae62018+350%1970
Lark SparrowPasserellidae62018+50%1972
Northern ShovelerAnatidae62016+167%1990
Blue-winged TealAnatidae52018+10%1970
Sharp-tailed GrousePhasianidae52018+83%1975
Northern HarrierAccipitridae52018-27%1970
Brewer's BlackbirdIcteridae52018+456%1970
American GoldfinchFringillidae52018+113%1972
Spotted TowheePasserellidae52018+111%1970

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