BirdAnalyst
BBS Route · Colorado · BCR 16

Ludlow Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 107 species recorded across 13 survey years, still active.

107Species 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 →
13Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1998–2025Span
4Observers

Bird Species Found on Colorado Ludlow

Top 40 of 107 species by most recent count. Each links to its species trend.

Species recorded on the Ludlow 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
Cliff SwallowHirundinidae1152025+51%2001
Cassin's KingbirdTyrannidae352025+444%2006
American RobinTurdidae302025-18%2001
Spotted TowheePasserellidae242025-25%2001
Western Wood-PeweeTyrannidae212025+41%2001
Plumbeous VireoVireonidae182025+119%2001
Wild TurkeyPhasianidae172016+320%2008
Mourning DoveColumbidae162025-47%2001
Red-winged BlackbirdIcteridae152025+505%2001
Chipping SparrowPasserellidae132025+4%2001
Western KingbirdTyrannidae102016-4%2001
Lesser GoldfinchFringillidae102025-24%2001
BushtitAegithalidae102009+11%2006
Broad-tailed HummingbirdTrochilidae92016-25%2001
House SparrowPasseridae82014+700%2001
Brown-headed CowbirdIcteridae72025-60%2001
Pine SiskinFringillidae72008+17%1999
DickcisselCardinalidae72025n/an/a
Woodhouse's Scrub-JayCorvidae62025+113%2001
Western MeadowlarkIcteridae62025-84%2001
Black-headed GrosbeakCardinalidae62025+58%2001
Rock WrenTroglodytidae62025+5%2001
Blue-gray GnatcatcherPolioptilidae62016+41%2008
American CootRallidae62014n/an/a
Say's PhoebeTyrannidae52025+167%2002
Common RavenCorvidae52025-7%2001
Pinyon JayCorvidae52025-24%2002
Bullock's OrioleIcteridae52025+44%2001
Lark SparrowPasserellidae52025+443%2001
Western TanagerCardinalidae52025-25%2001
Warbling VireoVireonidae52016+40%2002
White-breasted NuthatchSittidae52025+71%2001
Cassin's SparrowPasserellidae52011n/an/a
House FinchFringillidae42016+0%2001
Barn SwallowHirundinidae42025+26%2001
Northern Rough-winged SwallowHirundinidae42016+29%2002
Yellow WarblerParulidae42025+475%2001
Pygmy NuthatchSittidae42016+271%2001
Green-tailed TowheePasserellidae42014+25%2008
Turkey VultureCathartidae32025+67%2001

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