Should You Choose Spark or Sierra in the Pokemon GO Holiday Part 1 Research?
In Pokémon GO's Holiday Part 1 branching research, trainers face a choice: aid Spark or Sierra. While Niantic's official announcement omits this free research, available December 17th-22nd (9:59 AM local time), the decision impacts your Pokémon catching focus and reward encounters.
Choosing Your Path: Spark or Sierra?
The core difference lies in the Pokémon types: Ice (Spark) or Fire (Sierra). The final reward (Sandygast) remains consistent, but the earlier encounter differs significantly.
Spark's Ice-Type Challenge

Choosing Spark directs your efforts towards Ice-type Pokémon. Your Part 2 reward is an Alolan Vulpix.
Spark - Part 2 Tasks & Rewards
| Research Task | Reward |
|---|---|
| Catch 10 Ice-Type Pokémon | 10 Pinap Berries |
| Take 5 snapshots of wild Pokémon | 20 Poké Balls |
| Complete 5 Field Research Tasks | 500 Stardust |
| Complete All Three Tasks | Alolan Vulpix, 2000 XP |
Spark - Part 3 Tasks & Rewards
| Research Task | Reward |
|---|---|
| Catch 25 Ice-Type Pokémon | 10 Ultra Balls |
| Power Up Ice-Type Pokémon 10 Times | 1 Golden Razz Berry |
| Collect MP from 3 Power Spots | 100 Max Particles |
| Complete All Three Tasks | Sandygast, 3000 XP, 2000 Stardust |
Sierra's Fiery Pursuit

Selecting Sierra focuses your efforts on Fire-type Pokémon, culminating in a Shadow Vulpix encounter in Part 2.
Sierra - Part 2 Tasks & Rewards
| Research Task | Reward |
|---|---|
| Catch 10 Fire-Type Pokémon | 10 Pinap Berries |
| Take 5 snapshots of wild Pokémon | 20 Poké Balls |
| Complete 5 Field Research Tasks | 500 Stardust |
| Complete All Three Tasks | Shadow Vulpix, 2000 XP |
Sierra - Part 3 Tasks & Rewards
| Research Task | Reward |
|---|---|
| Catch 25 Fire-Type Pokémon | 10 Ultra Balls |
| Power Up Fire-Type Pokémon 10 Times | 1 Golden Razz Berry |
| Collect MP from 3 Power Spots | 100 Max Particles |
| Complete All Three Tasks | Sandygast, 3000 XP, 2000 Stardust |
The Verdict:
Your choice hinges on your desired Vulpix variant (Alolan or Shadow) and preferred Pokémon type to catch throughout the event. Pokémon GO is currently available for play.
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