BirdAnalyst
BBS Route · Wyoming · BCR 17

Riverview Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 81 species recorded across 25 survey years, still active.

81Species 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 →
25Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1982–2025Span
6Observers

Bird Species Found on Wyoming Riverview

Top 40 of 81 species by most recent count. Each links to its species trend.

Species recorded on the Riverview 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 MeadowlarkIcteridae1022025-1%1984
Lark BuntingPasserellidae582025-48%1984
Cliff SwallowHirundinidae412022-58%1990
Mourning DoveColumbidae352025-46%1984
Red-winged BlackbirdIcteridae212025+43%1987
Brown-headed CowbirdIcteridae212025+367%1990
Horned LarkAlaudidae112025-84%1984
Barn SwallowHirundinidae92025-58%1984
Loggerhead ShrikeLaniidae72025+100%1987
Sagebrush SparrowPasserellidae71989n/an/a
Bullock's OrioleIcteridae72025+350%2019
Common NighthawkCaprimulgidae62025-23%1984
Bank SwallowHirundinidae61997+37%1984
Savannah SparrowPasserellidae61988-84%1984
RedheadAnatidae62021+200%1999
Long-billed CurlewScolopacidae62022+88%2016
American WigeonAnatidae52022+38%1992
MallardAnatidae42022+0%1987
KilldeerCharadriidae42025-57%1984
Western KingbirdTyrannidae42025+100%1988
Wilson's PhalaropeScolopacidae42022+80%2014
Rock PigeonColumbidae42015n/an/a
Northern PintailAnatidae32021-25%1994
American KestrelFalconidae32025-47%1984
Wild TurkeyPhasianidae31992+200%1984
Grasshopper SparrowPasserellidae32025+16%1988
Northern Rough-winged SwallowHirundinidae32015-79%1993
Cassin's SparrowPasserellidae32018n/an/a
Northern ShovelerAnatidae22022+150%2015
Red-tailed HawkAccipitridae22025+17%1988
Swainson's HawkAccipitridae22016-33%1984
Eastern KingbirdTyrannidae22025-47%1988
Lark SparrowPasserellidae22025-92%1990
Brewer's BlackbirdIcteridae22022-77%1988
Vesper SparrowPasserellidae22025-91%1988
Upland SandpiperScolopacidae22025+50%1998
Say's PhoebeTyrannidae22025-20%1989
Golden EagleAccipitridae22015+50%1992
GadwallAnatidae22022+83%2016
Green-winged TealAnatidae21998+100%1992

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