A PDF field guide to the species reported in and around Fort Delaware State Park, with common and scientific names and up to 3 photos of each, laid out for use in the field and offline.
The animals people report most often in and around Fort Delaware State Park include Broad-Winged Skipper, Orb Weavers, Marsh Wren, Spicebush and Chickweed Geometer. Birds lead the list with 17 species, followed by 16 plants and 13 insects.
The 20 species reported most often here, of 50 in the full guide.

Broad-Winged Skipper

Ironweed
Orb Weavers
Marsh Wren

Spicebush

Chickweed Geometer

Kidneyleaf Mudplantain
Moistbank Pimpernel

Parallel-Banded Leafroller Moth
Eastern Comma
Foster'S Tern
Flag Iris
Common Pimpernel

Spotted Lanternfly
Groundhog
Black Vulture