BirdAnalyst
BBS Route · Colorado · BCR 16

Falfa Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 125 species recorded across 41 survey years, still active.

125Species Recorded
41Years Surveyed
1971–2024Span
6Observers

Bird Species Found on Colorado Falfa

Top 40 of 125 species by most recent count. Each links to its species trend.

Species recorded on the Falfa route.
History
Red-winged BlackbirdIcteridae1512024-24%1973
House SparrowPasseridae842024+53%1973
Western MeadowlarkIcteridae752024+1%1973
European StarlingSturnidae502024+9%1973
Cliff SwallowHirundinidae352024+129%1973
Brown-headed CowbirdIcteridae292024+128%1974
Western KingbirdTyrannidae26202419×1975
Brewer's BlackbirdIcteridae242024-70%1973
Western Wood-PeweeTyrannidae222024+336%1975
Eurasian Collared-DoveColumbidae192024+444%2010
Black-billed MagpieCorvidae172024-73%1973
Canada GooseAnatidae152024-15%2001
Bullock's OrioleIcteridae132024+236%1973
Lark SparrowPasserellidae132024+50%1973
Mourning DoveColumbidae122024-65%1973
American RobinTurdidae122024-25%1973
Common RavenCorvidae102024+264%1977
Yellow WarblerParulidae92024+10%1973
Lesser GoldfinchFringillidae82024+164%1977
Black SwiftApodidae81987n/an/a
Ash-throated FlycatcherTyrannidae62024+111%1973
American CrowCorvidae62024+18%1974
House FinchFringillidae62024-27%1973
Barn SwallowHirundinidae62024-83%1973
Common YellowthroatParulidae62024+36%1974
Band-tailed PigeonColumbidae61980+500%1972
MallardAnatidae52024-11%1975
Say's PhoebeTyrannidae52024+57%1973
Mountain BluebirdTurdidae52024+92%1973
White-breasted NuthatchSittidae52024+125%1974
Cassin's KingbirdTyrannidae52024+40%2018
American KestrelFalconidae42024+50%1975
RedheadAnatidae41987n/an/a
Pine SiskinFringillidae32003-33%1998
Chipping SparrowPasserellidae32024-81%1973
Spotted TowheePasserellidae32024-71%1973
Northern Rough-winged SwallowHirundinidae32024+4%1973
Red-tailed HawkAccipitridae32024+25%1987
Savannah SparrowPasserellidae32022-38%1987
GadwallAnatidae31997n/an/a

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