BirdAnalyst
BBS Route · Colorado · BCR 18

Timpas Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 65 species recorded across 19 survey years, still active.

65Species 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 →
19Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1995–2025Span
5Observers

Bird Species Found on Colorado Timpas

Top 40 of 65 species by most recent count. Each links to its species trend.

Species recorded on the Timpas 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
Lark BuntingPasserellidae1682025-22%1998
Western MeadowlarkIcteridae1082025-50%1998
Cassin's SparrowPasserellidae482025+46%1998
Chihuahuan RavenCorvidae312025+420%1998
Horned LarkAlaudidae252025-57%1998
Cliff SwallowHirundinidae252013+32%2001
Mourning DoveColumbidae212025-14%1998
Common GrackleIcteridae182025+13%1998
Yellow-headed BlackbirdIcteridae152013+400%2003
Northern MockingbirdMimidae102025-6%1998
Turkey VultureCathartidae92013+67%2000
Swainson's HawkAccipitridae72025-6%2000
House FinchFringillidae72019+129%2005
Chipping SparrowPasserellidae62006n/an/a
Brown ThrasherMimidae52010+150%2000
Grasshopper SparrowPasserellidae42025-61%1998
Red-winged BlackbirdIcteridae42019-45%2001
DickcisselCardinalidae42025n/an/a
Burrowing OwlStrigidae32025+140%1998
Ash-throated FlycatcherTyrannidae32013-25%1995
Brown-headed CowbirdIcteridae32013+100%2001
Brewer's BlackbirdIcteridae32006-25%2000
Rock WrenTroglodytidae32014+200%2003
Short-eared OwlStrigidae32025-25%2005
Rock PigeonColumbidae22025+31%1998
Ferruginous HawkAccipitridae22025-14%2001
Common NighthawkCaprimulgidae22025-22%1998
Western KingbirdTyrannidae22025-64%1998
Cassin's KingbirdTyrannidae22019+120%2008
Say's PhoebeTyrannidae22025+0%2006
Bullock's OrioleIcteridae22025-38%1998
Lark SparrowPasserellidae22025-59%1998
Eastern KingbirdTyrannidae22009+100%1997
Northern HarrierAccipitridae22006+0%2000
Blue-winged TealAnatidae22006+0%2000
American CrowCorvidae22003-33%2000
Northern Rough-winged SwallowHirundinidae22000n/an/a
American AvocetRecurvirostridae22015+100%2008
KilldeerCharadriidae12025+0%1998
European StarlingSturnidae12025+58%2000

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