BirdAnalyst
BBS Route · Colorado · BCR 16

Mosca Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 71 species recorded across 30 survey years, still active.

71Species Recorded
30Years Surveyed
1992–2024Span
2Observers

Bird Species Found on Colorado Mosca

Top 40 of 71 species by most recent count. Each links to its species trend.

Species recorded on the Mosca route.
History
Horned LarkAlaudidae742024+4%1994
House SparrowPasseridae512024+87%1997
Mourning DoveColumbidae482024-48%1994
Brewer's BlackbirdIcteridae252024-53%1994
Western MeadowlarkIcteridae232024-70%1994
Brewer's SparrowPasserellidae212024-16%1994
Sage ThrasherMimidae192024-9%1994
Sagebrush SparrowPasserellidae192024+975%1999
Lark SparrowPasserellidae162017+31%1996
Common RavenCorvidae122024+100%1995
Cliff SwallowHirundinidae112024+36%2013
Rock PigeonColumbidae112024-49%2008
Western KingbirdTyrannidae102024+80%1995
Red-winged BlackbirdIcteridae92024-83%1994
White-faced IbisThreskiornithidae71994n/an/a
House FinchFringillidae62024+675%1996
Black-billed MagpieCorvidae52024-87%1994
Green-winged TealAnatidae51997+150%1993
KilldeerCharadriidae42024-83%1994
Lark BuntingPasserellidae42017-29%1994
Common GrackleIcteridae41999-20%1993
Northern MockingbirdMimidae42024+180%1998
Northern HarrierAccipitridae32005-17%1994
Song SparrowPasserellidae32024+40%1997
GadwallAnatidae31994-25%1993
Brown-headed CowbirdIcteridae32024+83%1996
Red-tailed HawkAccipitridae32024+17%2003
American AvocetRecurvirostridae22023-29%1994
Swainson's HawkAccipitridae22024+8%1995
European StarlingSturnidae22024-25%1994
Yellow-headed BlackbirdIcteridae22019-55%1996
Northern PintailAnatidae21993n/an/a
Canada GooseAnatidae22004-93%1993
Long-billed CurlewScolopacidae22006-13%1995
Say's PhoebeTyrannidae22023+300%1998
Great Horned OwlStrigidae22023+67%1998
Vesper SparrowPasserellidae22024-40%2013
Black-crowned Night HeronArdeidae22008+100%1999
Turkey VultureCathartidae22021+50%2006
Ferruginous HawkAccipitridae22024-17%2014

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