BirdAnalyst
BBS Route · Mississippi · BCR 27

Weir Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 82 species recorded across 9 survey years, still active.

82Species 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 →
9Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
2007–2025Span
2Observers

Bird Species Found on Mississippi Weir

Top 40 of 82 species by most recent count. Each links to its species trend.

Species recorded on the Weir 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
American CrowCorvidae312025-30%2016
Indigo BuntingCardinalidae282025+32%2016
Red-eyed VireoVireonidae262025+77%2016
Yellow-breasted ChatIcteriidae212025-39%2016
Cliff SwallowHirundinidae212025+471%2022
Northern CardinalCardinalidae192025-51%2016
Brown-headed CowbirdIcteridae182025+65%2016
White-eyed VireoVireonidae162025-49%2016
Hooded WarblerParulidae162025+143%2016
Wood ThrushTurdidae162025+0%2016
Black VultureCathartidae162023+117%2018
Tufted TitmouseParidae142025-32%2016
Yellow-billed CuckooCuculidae132025-21%2016
Common YellowthroatParulidae102025+25%2016
Wild TurkeyPhasianidae102024+900%2008
Blue JayCorvidae92025-39%2016
Eastern TowheePasserellidae82024-71%2016
Mourning DoveColumbidae72025-46%2016
Downy WoodpeckerPicidae72025+111%2016
House SparrowPasseridae72022+9%2016
Chipping SparrowPasserellidae72025+33%2019
Purple MartinHirundinidae62025+10%2018
Pine WarblerParulidae62025-7%2016
Northern MockingbirdMimidae62025-32%2016
Carolina ChickadeeParidae62025+0%2016
Blue-gray GnatcatcherPolioptilidae62025+23%2016
Red-bellied WoodpeckerPicidae52025-30%2016
Great Crested FlycatcherTyrannidae52025-29%2016
Brown ThrasherMimidae52025-56%2016
Turkey VultureCathartidae52025+36%2018
Fish CrowCorvidae52025-50%2018
Cedar WaxwingBombycillidae52019n/an/a
Red-winged BlackbirdIcteridae42025+28%2016
Eastern BluebirdTurdidae42025-60%2016
Northern ParulaParulidae42025+200%2019
White-breasted NuthatchSittidae42024+67%2018
Pileated WoodpeckerPicidae32025-38%2016
Eastern Wood-PeweeTyrannidae32025+144%2016
European StarlingSturnidae32023-13%2008
House FinchFringillidae32025-25%2019

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