60 butterflies were recorded flying in Alabama in October in our iNaturalist sample; 11 of the top 50 are at their peak this month. The list is ranked by number of research-grade observations.
Top butterflies in October

Gulf Fritillary

Monarch

Long-tailed Skipper

Common Buckeye

Cloudless Sulphur

Fiery Skipper

Clouded Skipper
Sleepy Orange

Pearl Crescent

Ocola Skipper

Pipevine Swallowtail

Variegated Fritillary
All butterflies flying in Alabama in October
| # | Species | Scientific name | Family | Obs. | Peak in state |
|---|---|---|---|---|---|
| 1 | Gulf Fritillary | Dione vanillae | Brush-footed Butterflies | 1,766 | Sep (past peak) |
| 2 | Monarch | Danaus plexippus | Brush-footed Butterflies | 799 | Oct (peak) |
| 3 | Long-tailed Skipper | Urbanus proteus | Skippers | 700 | Oct (peak) |
| 4 | Common Buckeye | Junonia coenia | Brush-footed Butterflies | 660 | Sep (past peak) |
| 5 | Cloudless Sulphur | Phoebis sennae | Whites, Yellows, and Sulphurs | 658 | Sep (past peak) |
| 6 | Fiery Skipper | Hylephila phyleus | Skippers | 470 | Aug (past peak) |
| 7 | Clouded Skipper | Lerema accius | Skippers | 404 | Oct (peak) |
| 8 | Sleepy Orange | Eurema nicippe | Whites, Yellows, and Sulphurs | 213 | Aug (past peak) |
| 9 | Pearl Crescent | Phyciodes tharos | Brush-footed Butterflies | 204 | Sep (past peak) |
| 10 | Ocola Skipper | Panoquina ocola | Skippers | 196 | Oct (peak) |
| 11 | Pipevine Swallowtail | Battus philenor | Swallowtails and Parnassians | 143 | Sep (past peak) |
| 12 | Variegated Fritillary | Euptoieta claudia | Brush-footed Butterflies | 141 | Sep (past peak) |
| 13 | Little Yellow | Eurema lisa | Whites, Yellows, and Sulphurs | 122 | Sep (past peak) |
| 14 | Red-banded Hairstreak | Calycopis cecrops | Gossamer-winged Butterflies | 114 | Sep (past peak) |
| 15 | Question Mark | Polygonia interrogationis | Brush-footed Butterflies | 113 | Sep (past peak) |
| 16 | Painted Lady | Vanessa cardui | Brush-footed Butterflies | 98 | Sep (past peak) |
| 17 | Viceroy | Limenitis archippus | Brush-footed Butterflies | 77 | Sep (past peak) |
| 18 | Carolina Satyr | Hermeuptychia sosybius | Brush-footed Butterflies | 77 | Aug (past peak) |
| 19 | Tropical Checkered-Skipper | Burnsius oileus | Skippers | 75 | Oct (peak) |
| 20 | Gray Hairstreak | Strymon melinus | Gossamer-winged Butterflies | 74 | Sep (past peak) |
| 21 | Eastern Tailed-Blue | Everes comyntas | Gossamer-winged Butterflies | 66 | Sep (past peak) |
| 22 | Common Checkered-Skipper | Burnsius communis | Skippers | 62 | Oct (peak) |
| 23 | Red Admiral | Vanessa atalanta | Brush-footed Butterflies | 61 | Aug (past peak) |
| 24 | Eastern Tiger Swallowtail | Papilio glaucus | Swallowtails and Parnassians | 49 | Aug (past peak) |
| 25 | Huron Skipper | Atalopedes huron | Skippers | 45 | Aug (past peak) |
| 26 | American Lady | Vanessa virginiensis | Brush-footed Butterflies | 44 | May (past peak) |
| 27 | Hackberry Emperor | Asterocampa celtis | Brush-footed Butterflies | 39 | Sep (past peak) |
| 28 | Whirlabout | Hedone vibex | Skippers | 36 | Aug (past peak) |
| 29 | Palamedes Swallowtail | Papilio palamedes | Swallowtails and Parnassians | 30 | Sep (past peak) |
| 30 | Eastern Giant Swallowtail | Heraclides cresphontes | Swallowtails and Parnassians | 30 | Sep (past peak) |
| 31 | Silver-spotted Skipper | Epargyreus clarus | Skippers | 29 | Aug (past peak) |
| 32 | Small White | Pieris rapae | Whites, Yellows, and Sulphurs | 28 | May (past peak) |
| 33 | Spicebush Swallowtail | Papilio troilus | Swallowtails and Parnassians | 28 | Aug (past peak) |
| 34 | Great Purple Hairstreak | Atlides halesus | Gossamer-winged Butterflies | 26 | Sep (past peak) |
| 35 | Zebra Longwing | Heliconius charithonia | Brush-footed Butterflies | 25 | Oct (peak) |
| 36 | American Snout | Libytheana carinenta | Brush-footed Butterflies | 25 | Jun (past peak) |
| 37 | Little Metalmark | Calephelis virginiensis | Metalmark Butterflies | 23 | Oct (peak) |
| 38 | Southern Pearly-eye | Lethe portlandia | Brush-footed Butterflies | 19 | Sep (past peak) |
| 39 | Southern Skipperling | Oarisma minima | Skippers | 19 | Aug (past peak) |
| 40 | Phaon Crescent | Phyciodes phaon | Brush-footed Butterflies | 17 | Oct (peak) |
| 41 | Dainty Sulphur | Nathalis iole | Whites, Yellows, and Sulphurs | 16 | Oct (peak) |
| 42 | Least Skipper | Ancyloxypha numitor | Skippers | 16 | Sep (past peak) |
| 43 | Eastern Gemmed-Satyr | Cyllopsis gemma | Brush-footed Butterflies | 15 | Sep (past peak) |
| 44 | White Peacock | Anartia jatrophae | Brush-footed Butterflies | 14 | Oct (peak) |
| 45 | Goatweed Leafwing | Anaea andria | Brush-footed Butterflies | 12 | Apr (past peak) |
| 46 | Eastern Comma | Polygonia comma | Brush-footed Butterflies | 11 | Sep (past peak) |
| 47 | Eufala Skipper | Lerodea eufala | Skippers | 10 | Sep (past peak) |
| 48 | Barred Yellow | Eurema daira | Whites, Yellows, and Sulphurs | 10 | Aug (past peak) |
| 49 | White Checkered-Skipper | Burnsius albezens | Skippers | 10 | Sep (past peak) |
| 50 | Brazilian Skipper | Calpodes ethlius | Skippers | 8 | Jul (past peak) |