BirdAnalyst
BBS Route · Mississippi · BCR 27

Weir Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 82 species recorded across 8 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 →
8Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
2007–2024Span
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
Cliff SwallowHirundinidae762024+400%2022
Indigo BuntingCardinalidae412024+40%2016
American CrowCorvidae272024-30%2016
Yellow-breasted ChatIcteriidae242024-32%2016
Northern CardinalCardinalidae192024-52%2016
White-eyed VireoVireonidae162024-54%2016
Black VultureCathartidae162023+117%2018
Northern MockingbirdMimidae142024-18%2016
Red-eyed VireoVireonidae122024+53%2016
Common YellowthroatParulidae122024+13%2016
Yellow-billed CuckooCuculidae112024-48%2016
Hooded WarblerParulidae112024+93%2016
Eastern Wood-PeweeTyrannidae102024+167%2016
Blue JayCorvidae102024-17%2016
Tufted TitmouseParidae102024-41%2016
Wood ThrushTurdidae102024-7%2016
Wild TurkeyPhasianidae102024+900%2008
Mourning DoveColumbidae82024-49%2016
Brown-headed CowbirdIcteridae82024+57%2016
Red-winged BlackbirdIcteridae82024+11%2016
Eastern TowheePasserellidae82024-71%2016
Barn SwallowHirundinidae72024-71%2016
House SparrowPasseridae72022+9%2016
Downy WoodpeckerPicidae52024+100%2016
Red-bellied WoodpeckerPicidae52024-20%2016
Pine WarblerParulidae52024-15%2016
Carolina ChickadeeParidae52024-6%2016
Cedar WaxwingBombycillidae52019n/an/a
Great Crested FlycatcherTyrannidae42024-29%2016
Purple MartinHirundinidae42024+0%2018
Chipping SparrowPasserellidae42024+72%2019
White-breasted NuthatchSittidae42024+67%2018
KilldeerCharadriidae32024+100%2008
Eastern KingbirdTyrannidae32024+27%2016
European StarlingSturnidae32023-13%2008
Prairie WarblerParulidae32023+50%2016
Eastern MeadowlarkIcteridae32022+50%2008
Orchard OrioleIcteridae32024-11%2018
Northern ParulaParulidae32024+167%2019
American RobinTurdidae32023-38%2018

Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22. A route is a sample, not a census.