BirdAnalyst
BBS Route · Wyoming · BCR 17

Natrona Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 68 species recorded across 25 survey years, no longer active.

68Species 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 →
1968–1992Span
4Observers

Bird Species Found on Wyoming Natrona

Top 40 of 68 species by most recent count. Each links to its species trend.

Species recorded on the Natrona 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 SwallowHirundinidae1601992+70%1971
Horned LarkAlaudidae1341992+52%1970
Western MeadowlarkIcteridae681992-45%1970
American White PelicanPelecanidae241992n/an/a
Brewer's BlackbirdIcteridae221992-4%1970
Lark BuntingPasserellidae221992-12%1970
Barn SwallowHirundinidae171992+400%1971
Canada GooseAnatidae141988n/an/a
American CootRallidae13199219×1978
Bank SwallowHirundinidae121992n/an/a
KilldeerCharadriidae111992+309%1970
Brewer's SparrowPasserellidae91992-19%1970
Sage ThrasherMimidae91992+22%1970
Vesper SparrowPasserellidae81992-6%1970
Say's PhoebeTyrannidae81992+57%1972
Ruddy DuckAnatidae81991+700%1981
Northern PintailAnatidae71992+243%1980
American WigeonAnatidae71992+8%1975
Blue-winged TealAnatidae71992+78%1983
California GullLaridae71992-64%1985
Golden EagleAccipitridae61992+225%1973
GadwallAnatidae61990+100%1975
Wilson's PhalaropeScolopacidae61992+280%1977
Mourning DoveColumbidae41992-65%1970
Yellow-headed BlackbirdIcteridae41992+125%1971
MallardAnatidae31992+108%1972
Loggerhead ShrikeLaniidae31992+100%1970
Greater Sage-GrousePhasianidae31988-14%1977
American KestrelFalconidae31992+500%1971
Purple MartinHirundinidae31969n/an/a
Red-tailed HawkAccipitridae31991+133%1982
RedheadAnatidae31988-11%1984
SoraRallidae31983+200%1982
Long-billed CurlewScolopacidae21968n/an/a
Northern HarrierAccipitridae21992-40%1971
Rock WrenTroglodytidae21992-78%1970
Lark SparrowPasserellidae21972+100%1971
Northern Rough-winged SwallowHirundinidae21980-33%1971
Green-winged TealAnatidae21991+180%1987
Northern ShovelerAnatidae21992-21%1987

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