BirdAnalyst
BBS Route · New Mexico · BCR 18

Grenville Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 90 species recorded across 54 survey years, still active.

90Species 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 →
54Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1968–2025Span
3Observers

Bird Species Found on New Mexico Grenville

Top 40 of 90 species by most recent count. Each links to its species trend.

Species recorded on the Grenville 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
Horned LarkAlaudidae1822025-5%1970
Western MeadowlarkIcteridae1742025-41%1970
Cassin's SparrowPasserellidae1022025+21%1970
Lark SparrowPasserellidae422025+117%1970
Mourning DoveColumbidae252025-9%1970
Lark BuntingPasserellidae222025+294%1972
Northern MockingbirdMimidae212025-7%1970
Northern PintailAnatidae161985+19%1978
Western KingbirdTyrannidae152025+8%1973
DickcisselCardinalidae142025+288%2005
Northern ShovelerAnatidae131979+225%1977
Cliff SwallowHirundinidae112025-5%1970
Blue-winged TealAnatidae81985+0%1977
Green-winged TealAnatidae82003+24%1985
Ruddy DuckAnatidae81978n/an/a
Cassin's KingbirdTyrannidae72025+33%1970
Scaled QuailOdontophoridae62025-8%1970
Blue GrosbeakCardinalidae62025+240%1973
Barn SwallowHirundinidae62025-25%1970
Common RavenCorvidae62025+850%1973
GadwallAnatidae61979+500%1977
Eared GrebePodicipedidae51978+150%1977
Chihuahuan RavenCorvidae52025-69%1979
Northern Rough-winged SwallowHirundinidae52024+200%2006
House SparrowPasseridae42024-72%1970
Rock PigeonColumbidae42025-54%1973
RedheadAnatidae41978-69%1977
Cinnamon TealAnatidae41979+300%1978
Curve-billed ThrasherMimidae42021+100%1986
Common NighthawkCaprimulgidae32025-80%1970
Grasshopper SparrowPasserellidae32025+133%1974
American CootRallidae31979+200%1977
Common GrackleIcteridae32025+133%1982
Lesser GoldfinchFringillidae32019+50%1997
Great-tailed GrackleIcteridae32025-43%2012
Mountain PloverCharadriidae22021-50%1971
Swainson's HawkAccipitridae22025+150%1970
Say's PhoebeTyrannidae22025-36%1972
Bullock's OrioleIcteridae22025-40%1970
Canyon TowheePasserellidae22021+20%1970

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