60 birds were recorded seen in Montana in August in our iNaturalist sample; 13 of the top 50 are at their peak this month. The list is ranked by number of research-grade observations.
Top birds in August

Cedar Waxwing
Black-billed Magpie

Bald Eagle

Osprey
Dusky Grouse

American Robin
Eastern Kingbird

Mallard

Common Merganser

Red-tailed Hawk

Chipping Sparrow

Northern Flicker
All birds seen in Montana in August
| # | Species | Scientific name | Family | Obs. | Peak in state |
|---|---|---|---|---|---|
| 1 | Cedar Waxwing | Bombycilla cedrorum | Waxwings | 256 | Aug (peak) |
| 2 | Black-billed Magpie | Pica hudsonia | Crows, Jays, and Magpies | 239 | Jun (past peak) |
| 3 | Bald Eagle | Haliaeetus leucocephalus | Hawks, Eagles, and Kites | 215 | Jul (past peak) |
| 4 | Osprey | Pandion haliaetus | Ospreys | 198 | Aug (peak) |
| 5 | Dusky Grouse | Dendragapus obscurus | Pheasants, Grouse, and Allies | 190 | Aug (peak) |
| 6 | American Robin | Turdus migratorius | Thrushes | 187 | Jun (past peak) |
| 7 | Eastern Kingbird | Tyrannus tyrannus | Tyrant Flycatchers | 172 | Jun (past peak) |
| 8 | Mallard | Anas platyrhynchos | Ducks, Geese, and Swans | 135 | May (past peak) |
| 9 | Common Merganser | Mergus merganser | Ducks, Geese, and Swans | 134 | Jul (past peak) |
| 10 | Red-tailed Hawk | Buteo jamaicensis | Hawks, Eagles, and Kites | 120 | Sep (rising) |
| 11 | Chipping Sparrow | Spizella passerina | New World Sparrows | 114 | May (past peak) |
| 12 | Northern Flicker | Colaptes auratus | Woodpeckers | 111 | Jul (past peak) |
| 13 | Western Wood-Pewee | Contopus sordidulus | Tyrant Flycatchers | 108 | Jun (past peak) |
| 14 | Great Blue Heron | Ardea herodias | Herons, Egrets, and Bitterns | 102 | Jul (past peak) |
| 15 | Wild Turkey | Meleagris gallopavo | Pheasants, Grouse, and Allies | 100 | May (past peak) |
| 16 | Western Tanager | Piranga ludoviciana | Cardinals and Allies | 100 | Jun (past peak) |
| 17 | American White Pelican | Pelecanus erythrorhynchos | Pelicans | 96 | Jun (past peak) |
| 18 | Ring-billed Gull | Larus delawarensis | Gulls, Terns, and Skimmers | 95 | Aug (peak) |
| 19 | Spotted Sandpiper | Actitis macularius | Sandpipers and Allies | 94 | Jul (past peak) |
| 20 | Pine Siskin | Spinus pinus | Finches, Euphonias, and Allies | 94 | Jun (past peak) |
| 21 | Black-capped Chickadee | Poecile atricapillus | Tits, Chickadees, and Titmice | 92 | Apr (past peak) |
| 22 | Swainson's Hawk | Buteo swainsoni | Hawks, Eagles, and Kites | 90 | Jun (past peak) |
| 23 | Common Raven | Corvus corax | Crows, Jays, and Magpies | 88 | Jun (past peak) |
| 24 | Steller's Jay | Cyanocitta stelleri | Crows, Jays, and Magpies | 87 | Jun (past peak) |
| 25 | Great Horned Owl | Bubo virginianus | Typical Owls | 87 | May (past peak) |
| 26 | Sandhill Crane | Antigone canadensis | Cranes | 84 | May (past peak) |
| 27 | Brown-headed Cowbird | Molothrus ater | New World Blackbirds and Orioles | 82 | Jun (past peak) |
| 28 | Northern Yellow Warbler | Setophaga aestiva | New World Warblers | 82 | May (past peak) |
| 29 | American Dipper | Cinclus mexicanus | Dippers | 79 | Jul (past peak) |
| 30 | Common Nighthawk | Chordeiles minor | Nightjars and Allies | 79 | Jun (past peak) |
| 31 | Clark's Nutcracker | Nucifraga columbiana | Crows, Jays, and Magpies | 77 | Aug (peak) |
| 32 | Baird's Sandpiper | Calidris bairdii | Sandpipers and Allies | 74 | Aug (peak) |
| 33 | Brewer's Blackbird | Euphagus cyanocephalus | New World Blackbirds and Orioles | 70 | Jun (past peak) |
| 34 | Red-breasted Nuthatch | Sitta canadensis | Nuthatches | 70 | Aug (peak) |
| 35 | Mountain Bluebird | Sialia currucoides | Thrushes | 69 | Jun (past peak) |
| 36 | American Kestrel | Falco sparverius | Falcons and Caracaras | 68 | Aug (peak) |
| 37 | American Crow | Corvus brachyrhynchos | Crows, Jays, and Magpies | 66 | Jul (past peak) |
| 38 | Canada Jay | Perisoreus canadensis | Crows, Jays, and Magpies | 65 | Sep (rising) |
| 39 | Solitary Sandpiper | Tringa solitaria | Sandpipers and Allies | 64 | Aug (peak) |
| 40 | Spruce Grouse | Canachites canadensis | Pheasants, Grouse, and Allies | 64 | Aug (peak) |
| 41 | White-crowned Sparrow | Zonotrichia leucophrys | New World Sparrows | 62 | Jul (past peak) |
| 42 | Vesper Sparrow | Pooecetes gramineus | New World Sparrows | 62 | Jun (past peak) |
| 43 | American Pipit | Anthus rubescens | Wagtails and Pipits | 62 | Aug (peak) |
| 44 | Canada Goose | Branta canadensis | Ducks, Geese, and Swans | 61 | May (past peak) |
| 45 | House Sparrow | Passer domesticus | Old World Sparrows | 61 | May (past peak) |
| 46 | Barn Swallow | Hirundo rustica | Swallows and Martins | 60 | Jul (past peak) |
| 47 | Yellow-rumped Warbler | Setophaga coronata | New World Warblers | 59 | May (past peak) |
| 48 | Hairy Woodpecker | Leuconotopicus villosus | Woodpeckers | 59 | Aug (peak) |
| 49 | Belted Kingfisher | Megaceryle alcyon | Kingfishers | 57 | Sep (rising) |
| 50 | Greater Yellowlegs | Tringa melanoleuca | Sandpipers and Allies | 57 | Aug (peak) |