BirdAnalyst
BBS Route · Colorado · BCR 16

Rosevale Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 76 species recorded across 15 survey years, still active.

76Species 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 →
15Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
2009–2025Span
1Observers

Bird Species Found on Colorado Rosevale

Top 40 of 76 species by most recent count. Each links to its species trend.

Species recorded on the Rosevale 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
House FinchFringillidae452025+102%2011
White-throated SwiftApodidae292025-55%2011
Cliff SwallowHirundinidae202025+108%2014
House SparrowPasseridae172025-28%2011
Spotted TowheePasserellidae142025+10%2011
Gambel's QuailOdontophoridae132025-7%2011
Bewick's WrenTroglodytidae122025+133%2012
Ash-throated FlycatcherTyrannidae112025-33%2011
American RobinTurdidae112025+0%2011
Mountain BluebirdTurdidae112025+6%2011
Mourning DoveColumbidae102025-8%2011
Western MeadowlarkIcteridae92025-19%2011
Black-throated SparrowPasserellidae82024+23%2012
Black-throated Gray WarblerParulidae82025+6%2011
Juniper TitmouseParidae82025-39%2011
Horned LarkAlaudidae72025+0%2011
Common RavenCorvidae72025+74%2011
Pinyon JayCorvidae72025-54%2012
Blue-gray GnatcatcherPolioptilidae72025-40%2011
Violet-green SwallowHirundinidae62025-15%2012
Virginia's WarblerParulidae62023+150%2011
BushtitAegithalidae62024n/an/a
Western KingbirdTyrannidae52025-32%2011
Brown-headed CowbirdIcteridae52024+33%2011
Plumbeous VireoVireonidae52025-27%2011
Rock WrenTroglodytidae52025-14%2011
Say's PhoebeTyrannidae42025+38%2011
Lesser GoldfinchFringillidae42023-33%2014
Canyon WrenTroglodytidae42023+50%2014
Black-chinned HummingbirdTrochilidae32024+29%2011
Broad-tailed HummingbirdTrochilidae32009n/an/a
Vesper SparrowPasserellidae32025+70%2013
Tree SwallowHirundinidae32025+107%2021
Woodhouse's Scrub-JayCorvidae32024-9%2014
Eurasian Collared-DoveColumbidae32025+67%2012
Barn SwallowHirundinidae32025+150%2017
Gray VireoVireonidae32025+100%2017
Red-breasted NuthatchSittidae32017+200%2013
Yellow-breasted ChatIcteriidae32024+200%2023
Lark SparrowPasserellidae22023-64%2012

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