BirdAnalyst
BBS Route · Utah · BCR 16

M Warner Res Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 111 species recorded across 27 survey years, still active.

111Species 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 →
27Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1993–2025Span
11Observers

Bird Species Found on Utah M Warner Res

Top 40 of 111 species by most recent count. Each links to its species trend.

Species recorded on the M Warner Res 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
Eared GrebePodicipedidae120202519×1995
Vesper SparrowPasserellidae1062025+21%1995
Brewer's SparrowPasserellidae532025+168%1996
Mountain BluebirdTurdidae392025+185%1995
Western MeadowlarkIcteridae382025-47%1995
Green-tailed TowheePasserellidae342025+159%1995
MallardAnatidae292025+36%1996
Brewer's BlackbirdIcteridae272025-52%1995
American RobinTurdidae272025+177%1995
Common RavenCorvidae202025+220%1995
Western GrebePodicipedidae152025+580%1999
Sage ThrasherMimidae152025+131%1995
Tree SwallowHirundinidae142025+400%1995
GadwallAnatidae122025-45%1995
Mourning DoveColumbidae122025-63%1995
American CootRallidae102025+236%1998
Red-winged BlackbirdIcteridae102025+600%1996
American White PelicanPelecanidae102025-46%2011
Lesser ScaupAnatidae92025-15%1995
Cinnamon TealAnatidae82025+40%1997
Lark SparrowPasserellidae72025+163%2015
Black-capped ChickadeeParidae71993n/an/a
Spotted TowheePasserellidae62025+375%2003
Greater Sage-GrousePhasianidae62013+50%2005
Pied-billed GrebePodicipedidae62018n/an/a
Northern ShovelerAnatidae52025+117%1995
Chipping SparrowPasserellidae52025+100%1995
Turkey VultureCathartidae52025+59%1996
American WigeonAnatidae52022+107%2000
Green-winged TealAnatidae52018+60%2000
Cliff SwallowHirundinidae52016+160%2002
Ring-necked DuckAnatidae52016+750%2003
Violet-green SwallowHirundinidae52025+250%2017
Barn SwallowHirundinidae42025-55%1995
Broad-tailed HummingbirdTrochilidae42025+100%1996
European StarlingSturnidae42010-69%1997
Dusky FlycatcherTyrannidae42025+14%2013
Common MerganserAnatidae42025n/an/a
Western KingbirdTyrannidae32016+25%2006
Horned LarkAlaudidae32025+143%1995

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