BirdAnalyst
BBS Route · Colorado · BCR 16

Gribbles Prk Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 112 species recorded across 31 survey years, still active.

112Species 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 →
31Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1994–2025Span
3Observers

Bird Species Found on Colorado Gribbles Prk

Top 40 of 112 species by most recent count. Each links to its species trend.

Species recorded on the Gribbles Prk 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 MeadowlarkIcteridae812025+88%1996
American RobinTurdidae532025+229%1996
Clark's NutcrackerCorvidae482025+135%1997
Vesper SparrowPasserellidae472025+290%1997
Red-winged BlackbirdIcteridae432025+79%1996
Western TanagerCardinalidae232025+900%2001
Western Wood-PeweeTyrannidae212025+294%1996
Spotted TowheePasserellidae202025+175%1996
Common RavenCorvidae192025+150%1996
Warbling VireoVireonidae152025+382%1996
Horned LarkAlaudidae152025+590%1997
Chipping SparrowPasserellidae142025+400%1997
Cliff SwallowHirundinidae142025+353%1996
Virginia's WarblerParulidae122025+271%2000
Savannah SparrowPasserellidae102025+540%2000
Violet-green SwallowHirundinidae92025+31%1997
Northern House WrenTroglodytidae92025+280%1996
Mountain BluebirdTurdidae92025+56%1996
Black-billed MagpieCorvidae92025+125%1997
Plumbeous VireoVireonidae82025+50%1996
American CrowCorvidae62025+233%1996
Tree SwallowHirundinidae62025+163%1999
Green-tailed TowheePasserellidae62025+35%1998
Mourning DoveColumbidae52024+57%1996
Lesser GoldfinchFringillidae52025+100%2007
Red-tailed HawkAccipitridae42025+100%1996
Say's PhoebeTyrannidae42025+0%1996
Brewer's BlackbirdIcteridae42025+71%1996
Black-headed GrosbeakCardinalidae42025+400%1997
Common NighthawkCaprimulgidae42025+120%1997
Steller's JayCorvidae42025-33%1997
Lincoln's SparrowPasserellidae42025+43%1999
Pine SiskinFringillidae42025-25%2006
Lark SparrowPasserellidae42025+140%2011
Black-capped ChickadeeParidae42025+0%2021
Woodhouse's Scrub-JayCorvidae32025-20%1997
Pinyon JayCorvidae32024-88%1998
Rock WrenTroglodytidae32025+50%1997
Turkey VultureCathartidae32025+167%2007
Pygmy NuthatchSittidae32025-13%2009

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