BirdAnalyst
BBS Route · Colorado · BCR 10

Maybell Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 113 species recorded across 44 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 →
44Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1970–2024Span
13Observers

Bird Species Found on Colorado Maybell

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

Species recorded on the Maybell 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 MeadowlarkIcteridae1092024+170%1972
Brewer's SparrowPasserellidae692024+78%1974
Mourning DoveColumbidae452024-4%1972
Vesper SparrowPasserellidae392024+296%1974
Sage ThrasherMimidae372024+31%1974
Red-winged BlackbirdIcteridae272024+26%1972
Cliff SwallowHirundinidae242024+48%1973
Horned LarkAlaudidae162024+120%1972
European StarlingSturnidae162024+409%1972
Brewer's BlackbirdIcteridae122024-55%1972
Pine SiskinFringillidae101985n/an/a
American RobinTurdidae92024-49%1972
Green-tailed TowheePasserellidae92024+38%1978
Wilson's SnipeScolopacidae72024-7%1973
Common RavenCorvidae72024+600%1985
Barn SwallowHirundinidae72024-6%1972
Turkey VultureCathartidae72024+220%1982
Gray FlycatcherTyrannidae72024+120%1992
Lark SparrowPasserellidae72024+50%1991
Yellow WarblerParulidae72024+133%1976
Brown-headed CowbirdIcteridae62024+200%1974
Bewick's WrenTroglodytidae62024+14%1976
Violet-green SwallowHirundinidae62012-38%2007
KilldeerCharadriidae52024+8%1972
Steller's JayCorvidae51970n/an/a
House SparrowPasseridae52024+88%1973
Black-throated SparrowPasserellidae51974n/an/a
Spotted TowheePasserellidae52024+40%1996
Black-capped ChickadeeParidae52006+400%2002
Western KingbirdTyrannidae42024-47%1972
Western Wood-PeweeTyrannidae42024+300%1985
Say's PhoebeTyrannidae42024-13%1974
Northern Rough-winged SwallowHirundinidae42024-68%1976
Blue-gray GnatcatcherPolioptilidae42024+133%1992
Ash-throated FlycatcherTyrannidae42024-22%1994
Savannah SparrowPasserellidae42024+100%2004
Dusky FlycatcherTyrannidae42019n/an/a
MallardAnatidae32024-20%1973
Red-tailed HawkAccipitridae32023+100%1973
Common NighthawkCaprimulgidae32024+0%1975

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