BirdAnalyst
BBS Route · Colorado · BCR 16

Dinosaur Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 103 species recorded across 30 survey years, still active.

103Species 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 →
30Years 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
3Observers

Bird Species Found on Colorado Dinosaur

Top 40 of 103 species by most recent count. Each links to its species trend.

Species recorded on the Dinosaur 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 MeadowlarkIcteridae672025+4%1997
Brewer's SparrowPasserellidae602025-34%1997
Mourning DoveColumbidae462025+41%1997
American RobinTurdidae392025-23%1997
Pinyon JayCorvidae382025-66%1998
Vesper SparrowPasserellidae372025-27%1997
Sage ThrasherMimidae312025+13%1997
Green-tailed TowheePasserellidae292025-41%1997
Brewer's BlackbirdIcteridae282025-71%1997
Spotted TowheePasserellidae23202519×1997
Horned LarkAlaudidae172025+138%1997
Red-winged BlackbirdIcteridae162025-53%1997
Clark's NutcrackerCorvidae142019+16%1997
Mountain BluebirdTurdidae122025-38%1997
Common RavenCorvidae112025+390%1997
Lesser ScaupAnatidae102012-39%1997
Lark SparrowPasserellidae102025+31%1999
GadwallAnatidae92025-41%1997
American CootRallidae92025+73%1997
Northern ShovelerAnatidae82025+117%1999
White-faced IbisThreskiornithidae82010n/an/a
Cinnamon TealAnatidae62025-35%1997
Blue-gray GnatcatcherPolioptilidae62025-59%1997
RedheadAnatidae62025+114%2009
Eared GrebePodicipedidae52025-29%2001
MallardAnatidae52025-12%1997
Gray FlycatcherTyrannidae42025-81%1997
Pine SiskinFringillidae42008-68%1999
Barn SwallowHirundinidae42025-64%1997
Plumbeous VireoVireonidae42024-33%1997
Black-throated Gray WarblerParulidae42025-35%1997
Ruddy DuckAnatidae32025+7%1997
European StarlingSturnidae32016+483%1999
Cliff SwallowHirundinidae32025-89%1997
Cassin's FinchFringillidae32011-50%2005
Northern PintailAnatidae32025-13%2001
Townsend's SolitaireTurdidae32002+200%1999
Blue-winged TealAnatidae22025-20%2004
CanvasbackAnatidae22000+100%1995
Red-tailed HawkAccipitridae22025-17%1999

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