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Species · Louisiana · BBS 2025 Release · 1966–2024

Blue-gray Gnatcatcher Population Trend in Louisiana

All statesForest birds

Blue-gray Gnatcatcher in Louisiana has surged: up 328% on the route-weighted index since 1969.

+328%Since 1969
83Routes In State
57Years

Notable Blue-gray Gnatcatcher Trends in Louisiana

long arc increasecomputed index

Blue-gray Gnatcatcher has surged in Louisiana: up 328% on the route-weighted index since 1969.

Blue-gray Gnatcatcher Population Forecast in Louisiana

If the recent trend holds, Blue-gray Gnatcatcher in Louisiana is projected to fall about 12% by 2029 — from 5.6 in 2024 to a central estimate of 4.9 (95% range 2.9–6.9). A 5-year backtest shows a typical error of ±30.3%, with 80% of held-out values landing inside the 95% band.

-12%Change by 2029
4.9Projected 2029 index
2.9–6.995% range
±30.3%Backtest error
19672029
Projection of the recent trend (dashed) with 80/95% bands — a projection, not a prediction. Habitat, climate, and land use are not modeled.
YearProjected index95% low95% high
20254.72.76.7
20264.72.76.8
20274.82.86.8
20284.92.86.9
20294.92.96.9

Blue-gray Gnatcatcher Survey Routes in Louisiana

Routes recording Blue-gray Gnatcatcher in Louisiana.
Carterville2719921992
Mount Union2220241998
Womack2120241999
Ivan2120131998
Linville1820241998
Clay1720241968
Ivan 21620162014
Goodwill1620242004
Marion1419961988
Cheniere1220241985
Atchafalaya1220241989
Fillmore1119891968
Evelyn1120242004
Freetown1020091984
Flat Creek1020241998
Burr Ferry1020241987
Natchez920241993
Hargis 2920142013
Many819921991
Norwood820242006
Longstreet720241967
Ramah720241988
Fort Jessup720231998
Hargis720112006
Lake Cove720172008

Blue-gray Gnatcatcher Population Trend in Other States

alabamaarizonaarkansascaliforniacoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckymainemarylandmassachusettsmichiganminnesotamississippimissourinebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasutahvermontvirginiawest-virginiawisconsinwyoming

Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.