BirdAnalyst
State · BBS 2026 Release · 1966–2025

Idaho Breeding Birds

235 species recorded across 66 survey routes, 1968 to 2025. Browse by family or guild below.

Idaho Bird Population TrendsNotable signalsLong-arc shifts the engine flags automatically — sustained declines or increases large enough to stand out from year-to-year noise.Full methodology →

long arc declinecomputed indexTrend sourceWhether the figure is our own computed route-weighted index or an official USGS modeled estimate. The current build labels every trend as computed.Full methodology →

Lark Bunting has collapsed in Idaho: down 96% on the route-weighted index since 1996.

long arc increasecomputed indexTrend sourceWhether the figure is our own computed route-weighted index or an official USGS modeled estimate. The current build labels every trend as computed.Full methodology →

Canada Goose has surged in Idaho: up 13× on the route-weighted index since 1975.

long arc declinecomputed indexTrend sourceWhether the figure is our own computed route-weighted index or an official USGS modeled estimate. The current build labels every trend as computed.Full methodology →

Ring-necked Pheasant has collapsed in Idaho: down 95% on the route-weighted index since 1970.

long arc increasecomputed indexTrend sourceWhether the figure is our own computed route-weighted index or an official USGS modeled estimate. The current build labels every trend as computed.Full methodology →

Lincoln's Sparrow has surged in Idaho: up 12× on the route-weighted index since 1977.

long arc declinecomputed indexTrend sourceWhether the figure is our own computed route-weighted index or an official USGS modeled estimate. The current build labels every trend as computed.Full methodology →

California Gull has collapsed in Idaho: down 94% on the route-weighted index since 1971.

long arc increasecomputed indexTrend sourceWhether the figure is our own computed route-weighted index or an official USGS modeled estimate. The current build labels every trend as computed.Full methodology →

Golden-crowned Kinglet has surged in Idaho: up 996% on the route-weighted index since 1975.

How Bird Guilds Are Faring in IdahoGuild trendA mean-index aggregate across the species in this group — the structural direction of the guild, with individual-species noise smoothed out.Full methodology →

-97%

Game birds

10 species
-83%

Wetland birds

26 species
-81%

Shorebirds

8 species
-67%

Generalists

12 species
-41%

Grassland birds

9 species
-40%

Aerial insectivores

22 species
-22%

Forest birds

75 species
-16%

Arid-land birds

4 species
+5%

Birds of prey

17 species
+23%

Waterfowl

18 species

Idaho Bird Survey Routes

Browse Idaho Birds By FamilyTrendPercent 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 →

Each species links to its trend in Idaho.

Hawks, Eagles & Kites Accipitridae

American Goshawk -71%Bald Eagle -7%Cooper's Hawk -85%Ferruginous Hawk +733%Golden Eagle -26%Northern Harrier -49%Red-tailed Hawk +345%Sharp-shinned Hawk -33%Swainson's Hawk +381%

Bushtits Aegithalidae

Bushtit +177%

Larks Alaudidae

Horned Lark -6%

Kingfishers Alcedinidae

Belted Kingfisher -73%

Ducks, Geese & Waterfowl Anatidae

American Wigeon -61%Barrow's Goldeneye -91%Blue-winged Teal -46%Bufflehead -62%Canada Goose 13×Cinnamon Teal -81%Common Goldeneye -93%Common Merganser -69%Gadwall +56%Green-winged Teal -84%Lesser Scaup +4%Mallard +4%Northern Pintail -81%Northern Shoveler -36%Redhead -90%Ring-necked Duck -10%Ruddy Duck -72%Wood Duck +111%

Swifts Apodidae

Black Swift -45%Vaux's Swift -69%White-throated Swift +63%

Herons, Egrets & Bitterns Ardeidae

American Bittern -70%Black-crowned Night Heron -81%Great Blue Heron +116%Snowy Egret -86%

Waxwings Bombycillidae

Cedar Waxwing +115%

Nightjars & Nighthawks Caprimulgidae

Common Nighthawk +186%Common Poorwill -79%

Cardinals & Grosbeaks Cardinalidae

Black-headed Grosbeak +354%Lazuli Bunting +756%Western Tanager +402%

New World Vultures Cathartidae

Turkey Vulture +127%

Treecreepers Certhiidae

Brown Creeper -56%

Plovers & Lapwings Charadriidae

Killdeer -87%

Dippers Cinclidae

American Dipper +10%

Pigeons & Doves Columbidae

Eurasian Collared-Dove +680%Mourning Dove -55%Rock Pigeon +27%

Crows, Jays & Magpies Corvidae

American Crow -3%Black-billed Magpie -69%Canada Jay +66%Clark's Nutcracker -16%Common Raven +275%Steller's Jay -69%

Falcons & Caracaras Falconidae

American Kestrel +8%Merlin -69%Prairie Falcon +72%

Finches Fringillidae

American Goldfinch +2%Cassin's Finch +528%Evening Grosbeak -83%House Finch -14%Lesser Goldfinch +99%Pine Grosbeak -71%Pine Siskin +185%Red Crossbill +323%

Cranes Gruidae

Sandhill Crane +348%

Swallows & Martins Hirundinidae

Bank Swallow -70%Barn Swallow -74%Cliff Swallow +42%Northern Rough-winged Swallow -34%Tree Swallow +101%Violet-green Swallow -31%

Blackbirds & Orioles Icteridae

Bobolink +10%Brewer's Blackbird -83%Brown-headed Cowbird -16%Bullock's Oriole +64%Common Grackle +4%Red-winged Blackbird -63%Western Meadowlark -46%Yellow-headed Blackbird -82%

Yellow-breasted Chat Icteriidae

Yellow-breasted Chat +563%

Shrikes Laniidae

Loggerhead Shrike +195%

Gulls, Terns & Skimmers Laridae

Black Tern -30%California Gull -94%Caspian Tern -81%Forster's Tern -89%Franklin's Gull +129%Ring-billed Gull -82%

Mockingbirds & Thrashers Mimidae

Gray Catbird -18%Sage Thrasher +79%

New World Quail Odontophoridae

California Quail +77%

Osprey Pandionidae

Osprey +110%

Chickadees & Titmice Paridae

Black-capped Chickadee -13%Chestnut-backed Chickadee +219%Juniper Titmouse -82%Mountain Chickadee +1%

Wood-Warblers Parulidae

American Redstart -71%Black-throated Gray Warbler -12%Common Yellowthroat +223%MacGillivray's Warbler +137%Nashville Warbler +143%Northern Waterthrush -48%Orange-crowned Warbler +204%Townsend's Warbler +802%Wilson's Warbler +279%Yellow Warbler +38%

New World Sparrows Passerellidae

Black-throated Sparrow -62%Brewer's Sparrow -20%Chipping Sparrow +94%Fox Sparrow +326%Grasshopper Sparrow -38%Green-tailed Towhee +233%Lark Bunting -96%Lark Sparrow +25%Lincoln's Sparrow 12×Sagebrush Sparrow +333%Savannah Sparrow -27%Song Sparrow +94%Spotted Towhee +170%Vesper Sparrow +332%White-crowned Sparrow -21%

Old World Sparrows Passeridae

House Sparrow -68%

Pelicans Pelecanidae

American White Pelican -49%

Cormorants Phalacrocoracidae

Double-crested Cormorant -78%

Pheasants, Grouse & Turkeys Phasianidae

Chukar -85%Dusky Grouse -83%Gray Partridge -6%Greater Sage-Grouse -2%Ring-necked Pheasant -95%Ruffed Grouse -36%Sharp-tailed Grouse -11%Spruce Grouse +88%Wild Turkey +140%

Woodpeckers Picidae

American Three-toed Woodpecker -29%Black-backed Woodpecker -50%Downy Woodpecker -72%Hairy Woodpecker -24%Lewis's Woodpecker +171%Pileated Woodpecker +281%Red-naped Sapsucker +66%Williamson's Sapsucker -20%

Grebes Podicipedidae

Clark's Grebe -37%Eared Grebe -72%Pied-billed Grebe -49%Red-necked Grebe -79%Western Grebe -94%

Gnatcatchers Polioptilidae

Blue-gray Gnatcatcher +52%

Rails, Gallinules & Coots Rallidae

American Coot -83%Sora +17%Virginia Rail -55%

Avocets & Stilts Recurvirostridae

American Avocet -47%Black-necked Stilt -41%

Kinglets Regulidae

Golden-crowned Kinglet +996%Ruby-crowned Kinglet +253%

Sandpipers & Allies Scolopacidae

Long-billed Curlew +18%Spotted Sandpiper -54%Willet -62%Wilson's Phalarope -79%Wilson's Snipe -69%

Nuthatches Sittidae

Pygmy Nuthatch -72%Red-breasted Nuthatch +446%White-breasted Nuthatch -89%

Owls Strigidae

Burrowing Owl -50%Great Horned Owl -55%Short-eared Owl -62%

Starlings & Mynas Sturnidae

European Starling -66%

Ibises & Spoonbills Threskiornithidae

White-faced Ibis +607%

Hummingbirds Trochilidae

Black-chinned Hummingbird +173%Broad-tailed Hummingbird +570%Calliope Hummingbird +111%Rufous Hummingbird -44%

Wrens Troglodytidae

Canyon Wren -35%Marsh Wren +10%Northern House Wren +459%Pacific Wren +572%Rock Wren +320%

Thrushes Turdidae

American Robin -33%Hermit Thrush +103%Mountain Bluebird -14%Swainson's Thrush +155%Townsend's Solitaire -35%Varied Thrush -19%Veery +5%Western Bluebird -27%

Tyrant Flycatchers Tyrannidae

Ash-throated Flycatcher -86%Dusky Flycatcher +56%Eastern Kingbird -70%Gray Flycatcher +285%Hammond's Flycatcher +139%Least Flycatcher +197%Olive-sided Flycatcher +152%Say's Phoebe +90%Western Kingbird +183%Western Wood-Pewee +73%Willow Flycatcher +118%

Vireos Vireonidae

Cassin's Vireo +187%Plumbeous Vireo -88%Red-eyed Vireo +212%Warbling Vireo +165%

Source: USGS North American Breeding Bird Survey, retrieved 2026-08-14.