BirdAnalyst
BBS Route · Colorado · BCR 16

Dinosaur Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 102 species recorded across 29 survey years, still active.

102Species 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 →
29Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1995–2024Span
3Observers

Bird Species Found on Colorado Dinosaur

Top 40 of 102 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
Brewer's SparrowPasserellidae692024-36%1997
Western MeadowlarkIcteridae612024-2%1997
Sage ThrasherMimidae482024+25%1997
Vesper SparrowPasserellidae472024-25%1997
Mourning DoveColumbidae432024+49%1997
MallardAnatidae332024-4%1997
Green-tailed TowheePasserellidae262024-48%1997
American RobinTurdidae242024-54%1997
Brewer's BlackbirdIcteridae212024-76%1997
Spotted TowheePasserellidae20202416×1997
Mountain BluebirdTurdidae192024-42%1997
Clark's NutcrackerCorvidae142019+16%1997
Eared GrebePodicipedidae122024-32%2001
Red-winged BlackbirdIcteridae112024-62%1997
Lesser ScaupAnatidae102012-39%1997
Common RavenCorvidae102024+380%1997
Blue-gray GnatcatcherPolioptilidae92024-61%1997
GadwallAnatidae82024-47%1997
Ruddy DuckAnatidae82024+13%1997
American CootRallidae82024+73%1997
Horned LarkAlaudidae82024+125%1997
White-faced IbisThreskiornithidae82010n/an/a
Green-winged TealAnatidae72023-79%1997
Pinyon JayCorvidae72024-85%1998
Lark SparrowPasserellidae62024-39%1999
RedheadAnatidae62024+71%2009
Cinnamon TealAnatidae52024-39%1997
Black-throated Gray WarblerParulidae52024-10%1997
Say's PhoebeTyrannidae42024-56%1997
Pine SiskinFringillidae42008-68%1999
Chipping SparrowPasserellidae42024-43%1997
Plumbeous VireoVireonidae42024-33%1997
Rock WrenTroglodytidae42023-66%1997
KilldeerCharadriidae32024-70%1997
Woodhouse's Scrub-JayCorvidae32023-11%1998
European StarlingSturnidae32016+483%1999
Northern House WrenTroglodytidae32024+100%1997
Northern ShovelerAnatidae32024+50%1999
Cassin's FinchFringillidae32011-50%2005
Townsend's SolitaireTurdidae32002+200%1999

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