Searchable reference
Stardew Valley Island Field Office Database
Professor Snail rescue, fossil and mummified specimen donations, Island Survey answers, Golden Walnut rewards, and Ostrich Incubator completion.
Professor Snail Rescue Route
Unlock / Island Field Office opens
Repair the Dig Site bridge, reach the cave northeast of the Dig Site, and free Professor Snail with an explosion or careful slingshot shot before the office becomes interactive.
Large Animal Fossil Collection
Fossils / 6 Golden Walnuts and 1 Banana Sapling
Complete the five-piece Large Animal display by combining Dig Site Bone Nodes, southern island artifact spots, Golden Coconuts, fishing, and panning.
Snake Fossil Collection
Fossils / 3 Golden Walnuts and 1 Mango Sapling
Treat the Snake display as a Ginger Island West route: artifact spots, west-side fishing, Mussel Nodes, and ordinary rocks can all feed the missing pieces.
Mummified Frog and Bat
Specimens / 1 Golden Walnut each
The two mummified specimens split cleanly by biome: cut jungle weeds for the Frog and break Volcano Dungeon rocks for the Bat.
Island Survey Answers
Surveys / 2 Golden Walnuts total
After the office is active, answer Professor Snail's wall surveys with 22 Purple Flowers and 18 Purple Starfish, one answer attempt per survey per day.
Ostrich Incubator Completion
Completion / Ostrich Incubator recipe
Finish all four fossil/specimen displays and both island surveys to learn the Ostrich Incubator recipe, then connect the reward back to barn and perfection planning.