BirdAnalyst
BBS Route · Colorado · BCR 10

Maybell Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 114 species recorded across 45 survey years, still active.

114Species 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 →
45Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1970–2025Span
13Observers

Bird Species Found on Colorado Maybell

Top 40 of 114 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 MeadowlarkIcteridae862025+150%1972
Brewer's SparrowPasserellidae762025+83%1974
Vesper SparrowPasserellidae402025+329%1974
Sage ThrasherMimidae402025+40%1974
Mourning DoveColumbidae352025+5%1972
Red-winged BlackbirdIcteridae242025+22%1972
Cliff SwallowHirundinidae212025+77%1973
Brewer's BlackbirdIcteridae172025-31%1972
House SparrowPasseridae162025+213%1973
European StarlingSturnidae152025+336%1972
Horned LarkAlaudidae102025+105%1972
Barn SwallowHirundinidae102025-13%1972
Green-tailed TowheePasserellidae102025+21%1978
Pine SiskinFringillidae101985n/an/a
Eurasian Collared-DoveColumbidae102025+56%2011
American RobinTurdidae82025-54%1972
Gray FlycatcherTyrannidae72025+220%1992
KilldeerCharadriidae62025+17%1972
Common RavenCorvidae62025+667%1985
Bullock's OrioleIcteridae62025+175%1973
Bewick's WrenTroglodytidae62025+29%1976
Violet-green SwallowHirundinidae62012-38%2007
Steller's JayCorvidae51970n/an/a
Chipping SparrowPasserellidae52025-9%1974
Lark SparrowPasserellidae52025+75%1991
Black-throated SparrowPasserellidae51974n/an/a
Yellow WarblerParulidae52025+167%1976
Black-capped ChickadeeParidae52006+400%2002
Western KingbirdTyrannidae42025-27%1972
Black-billed MagpieCorvidae42025-86%1972
Brown-headed CowbirdIcteridae42025+200%1974
Say's PhoebeTyrannidae42024-13%1974
Blue-gray GnatcatcherPolioptilidae42025+200%1992
Sagebrush SparrowPasserellidae42025-76%1978
Common YellowthroatParulidae42025+14%1993
Savannah SparrowPasserellidae42024+100%2004
Dusky FlycatcherTyrannidae42019n/an/a
MallardAnatidae32024-20%1973
Wilson's SnipeScolopacidae32025-7%1973
Loggerhead ShrikeLaniidae32025+100%1975

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