Species · BBS 2025 Release · 1966–2024

Red-eyed Vireo

Red-eyed Vireo has increased: up 37% on the route-weighted index since 1968.

+37%Since 1968

2,735Routes

58Years Surveyed

About the Red-eyed Vireo

The Red-eyed Vireo (Vireo olivaceus) is a North American member of the Vireos (Vireonidae). In this analysis it is grouped with the forest birds.

Size: 4.5–6 in long (11–15 cm) — a small, deliberate songbird (typical for the family)
Habitat: Woodlands and forest edges, including wooded suburbs and parks.
Diet: Insects and spiders gleaned from foliage and bark, with seeds and berries in season.
Range: Recorded on 2,735 Breeding Bird Survey routes across 45 states, most concentrated in the Appalachian Mountains.
Family: Vireonidae · Forest birds

Notable Red-eyed Vireo Trends

No notable trend signals for Red-eyed Vireo. See the full index history below.

Red-eyed Vireo Population Forecast

If the recent trend holds, Red-eyed Vireo is projected to stay roughly flat through 2029, near 11 (95% range 9.5–12). A 5-year backtest shows a typical error of ±3.6%, with 100% of held-out values landing inside the 95% band.

+2%Change by 2029

11Projected 2029 index

9.5–1295% range

±3.6%Backtest error

Projection of the recent trend (dashed) with 80/95% bands — a projection, not a prediction. Habitat, climate, and land use are not modeled.

Year	Projected index	95% low	95% high
2025	11	9.3	12
2026	11	9.4	12
2027	11	9.4	12
2028	11	9.5	12
2029	11	9.5	12

Where the Red-eyed Vireo Is Detected

BBS routes recording Red-eyed Vireo, sized by most recent count.

Red-eyed Vireo Population Trend by State

Red-eyed Vireo population trend by state.

Alabama	+96%	1968	107
Alaska	insufficient data	n/a	3
Arkansas	+204%	1969	57
Colorado	insufficient data	n/a	4
Connecticut	+96%	1968	20
Delaware	+58%	1968	17
Florida	-38%	1968	84
Georgia	+11%	1968	111
Idaho	+148%	1971	22
Illinois	+131%	1968	104
Indiana	+144%	1968	67
Iowa	+23%	1969	37
Kansas	21×	1969	51
Kentucky	+64%	1968	64
Louisiana	+469%	1969	86
Maine	+221%	1968	78
Maryland	+160%	1968	76
Massachusetts	+251%	1968	32
Michigan	+191%	1968	108
Minnesota	+89%	1969	91
Mississippi	16×	1968	74
Missouri	+246%	1969	91
Montana	-54%	1970	41
Nebraska	+402%	1969	51
New Hampshire	+74%	1968	26
New Jersey	+71%	1968	42
New Mexico	insufficient data	n/a	1
New York	+108%	1968	129
North Carolina	+19%	1968	112
North Dakota	+428%	1969	46
Ohio	+313%	1968	89
Oklahoma	+225%	1969	50
Oregon	-81%	1971	21
Pennsylvania	+212%	1968	136
Rhode Island	+163%	1968	7
South Carolina	+7%	1968	51
South Dakota	-26%	1969	40
Tennessee	+156%	1968	55
Texas	+44%	1969	103
Vermont	+180%	1968	26
Virginia	+58%	1968	88
Washington	-88%	1970	61
West Virginia	+43%	1968	63
Wisconsin	+183%	1968	98
Wyoming	+88%	1977	15

Red-eyed Vireo Population Trend by Region

Bird Conservation Regions are the ecological unit for trends.

Red-eyed Vireo population trend by Bird Conservation Region.

Northern Pacific Rainforest	-90%	1970	32
Great Basin	-91%	1970	38
Northern Rockies	-47%	1970	71
Prairie Potholes	+381%	1969	91
Boreal Hardwood Transition	+137%	1968	127
Lower Great Lakes / St. Lawrence Plain	+120%	1968	86
Atlantic Northern Forest	+116%	1968	156
Badlands and Prairies	-24%	1969	60
Shortgrass Prairie	-5%	1980	10
Central Mixed Grass Prairie	+742%	1969	75
Edwards Plateau	-47%	1970	17
Oaks and Prairies	+165%	1969	57
Eastern Tallgrass Prairie	+75%	1968	270
Prairie Hardwood Transition	+125%	1968	161
Central Hardwoods	+190%	1968	166
West Gulf Coastal Plain / Ouachitas	+183%	1969	110
Mississippi Alluvial Valley	+140%	1968	63
Southeastern Coastal Plain	+52%	1968	343
Appalachian Mountains	+170%	1968	405
Piedmont	+60%	1968	169
New England / Mid-Atlantic Coast	+53%	1968	163
Peninsular Florida	-58%	1968	40
Gulf Coastal Prairie	-64%	1969	20

Red-eyed Vireo Conservation Status

Our route-weighted index shows it up about 36% since 1968.

Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22. Trend is a route-weighted relative-abundance index, not an absolute population.