BirdAnalyst
BBS Route · Montana · BCR 11

Glentana Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 71 species recorded across 10 survey years, still active.

71Species 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 →
10Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
2015–2025Span
2Observers

Bird Species Found on Montana Glentana

Top 40 of 71 species by most recent count. Each links to its species trend.

Species recorded on the Glentana 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 LarkAlaudidae1412025+57%2017
Red-winged BlackbirdIcteridae952025+252%2017
Brown-headed CowbirdIcteridae742025+51%2017
Western MeadowlarkIcteridae592025+1%2017
House SparrowPasseridae532025-54%2017
Chestnut-collared LongspurCalcariidae522025+74%2017
Common GrackleIcteridae42202513×2017
Vesper SparrowPasserellidae382025-6%2017
Yellow-headed BlackbirdIcteridae322022+967%2016
Lark BuntingPasserellidae252025-72%2017
Brewer's BlackbirdIcteridae232025+122%2017
Thick-billed LongspurCalcariidae182025-17%2017
Baird's SparrowPasserellidae152025+15%2017
Mourning DoveColumbidae132025-15%2017
Savannah SparrowPasserellidae122025-81%2017
Cliff SwallowHirundinidae112022-89%2016
Long-billed CurlewScolopacidae92025+109%2017
Western KingbirdTyrannidae92025+58%2017
Grasshopper SparrowPasserellidae82025-37%2017
Clay-colored SparrowPasserellidae82025-75%2017
Gray PartridgePhasianidae72024+600%2015
Eastern KingbirdTyrannidae62025-17%2017
Barn SwallowHirundinidae62025+150%2018
Marbled GodwitScolopacidae52025+100%2017
MallardAnatidae42025-26%2017
GadwallAnatidae42025+300%2016
KilldeerCharadriidae42025-38%2017
Ring-necked PheasantPhasianidae42025+100%2017
Northern HarrierAccipitridae42025-10%2019
Bank SwallowHirundinidae42025-92%2021
American White PelicanPelecanidae42025n/an/a
Wilson's PhalaropeScolopacidae32025+42%2017
Say's PhoebeTyrannidae32025+100%2016
BobolinkIcteridae32025-63%2017
Eurasian Collared-DoveColumbidae32024+150%2016
Northern ShovelerAnatidae32023+100%2017
Canada GooseAnatidae32024n/an/a
Common RavenCorvidae32025n/an/a
American WigeonAnatidae22025-50%2017
Blue-winged TealAnatidae22024-55%2016

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