A PDF field guide to the species reported in and around Castroville Regional 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 Castroville Regional Park include Fiery Skipper, Large Orange Sulphur, Gray Hairstreak, Variegated Fritillary and Cloudless Sulfur. Insects lead the list with 48 species, followed by 2 reptiles.
The 20 species reported most often here, of 50 in the full guide.
Fiery Skipper

Large Orange Sulphur

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Gray Hairstreak
Variegated Fritillary
Cloudless Sulfur

Clouded Skipper
Orange Sulfur
American Snout
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Blue Swallowtail