Generation 1 · Pokédex profile
Twin Bird Pokémon
Pokédex entry
Even while eating or sleeping, one of the heads remains always vigilant for any sign of danger. When threatened, it flees at over 60 miles per hour.
Battle data
Conditional evolutions can require additional game-specific prerequisites beyond the displayed method.
| Method | Location | Level | Evidence |
|---|---|---|---|
| Grass / ground | Route 16 | Lv. 18–22 | Source-indexed, not individually verified |
| Grass / ground | Route 17 | Lv. 24–28 | Source-indexed, not individually verified |
| Grass / ground | Route 18 | Lv. 24–28 | Source-indexed, not individually verified |
| Grass / ground | Route 28 | Lv. 41 | Source-indexed, not individually verified |
| Grass / ground | Route 38 | Lv. 20 | Source-indexed, not individually verified |
| Grass / ground | Route 39 | Lv. 21 | Source-indexed, not individually verified |
| Grass / ground | Safari Zone East | Lv. 26 | Source-indexed, not individually verified |
| Grass / ground | Safari Zone Northwest | Lv. 27–29 | Source-indexed, not individually verified |
| Grass / ground | Safari Zone South | Lv. 25 | Source-indexed, not individually verified |
| Grass / ground | Safari Zone Southwest | Lv. 27 | Source-indexed, not individually verified |
| Grass / ground | Safari Zone West | Lv. 26 | Source-indexed, not individually verified |
Rare grass and Surfing encounters inherit the first native slot's level range. Supplemental fishing follows each rod's native slots. These ranges exclude Lure effects and randomizer replacements; eligibility restrictions still apply.
Data source: configured Grand Anthology Gen 1–9 species, forms and abilities. The website uses frame-cropped copies of the game's existing Pokémon sprites, which remain franchise/artist-owned assets. Some alternate forms use labeled default-form artwork when their individual sprite is unavailable. See acknowledgments for credits.