BirdAnalyst
BBS Route · Colorado · BCR 16

Alamosa Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 110 species recorded across 36 survey years, still active.

110Species 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 →
36Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1988–2025Span
6Observers

Bird Species Found on Colorado Alamosa

Top 40 of 110 species by most recent count. Each links to its species trend.

Species recorded on the Alamosa 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
Red-winged BlackbirdIcteridae2012025+21%1991
House SparrowPasseridae862025+36%1991
Western MeadowlarkIcteridae752025-32%1991
Brewer's BlackbirdIcteridae582025-70%1991
European StarlingSturnidae572025-5%1991
Yellow-headed BlackbirdIcteridae462025-28%1991
Cliff SwallowHirundinidae392025+59%1993
Horned LarkAlaudidae302025-19%1991
Chipping SparrowPasserellidae271992n/an/a
Barn SwallowHirundinidae242025-48%1991
Eared GrebePodicipedidae242023n/an/a
Mourning DoveColumbidae192025-46%1991
KilldeerCharadriidae142025-74%1991
MallardAnatidae132025-84%1991
American GoldfinchFringillidae132025-56%1992
Sage ThrasherMimidae132025-52%1991
Song SparrowPasserellidae122025+9%1991
Yellow WarblerParulidae112025-60%1991
Eurasian Collared-DoveColumbidae112025+113%2012
Lark BuntingPasserellidae102015+900%1995
Wilson's PhalaropeScolopacidae92025-83%1991
Black TernLaridae92023+55%1993
Western Wood-PeweeTyrannidae92025+525%1999
Common NighthawkCaprimulgidae82025-55%1991
Northern Rough-winged SwallowHirundinidae82025+100%1994
American RobinTurdidae82025-54%1991
White-faced IbisThreskiornithidae52025-86%1991
American CootRallidae52025-74%1991
Western KingbirdTyrannidae52025+233%2000
Northern MockingbirdMimidae52025+140%2001
Northern PintailAnatidae42018-73%1992
Ring-necked DuckAnatidae41988n/an/a
Wilson's SnipeScolopacidae42025-89%1991
Rock PigeonColumbidae42025-19%1991
Black-billed MagpieCorvidae42025-71%1991
Common RavenCorvidae42025-52%1991
Tree SwallowHirundinidae42023-85%1991
Western Cattle-EgretArdeidae42023+0%1989
House FinchFringillidae42025-52%1997
GadwallAnatidae32025-80%1991

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