What are the odds of finding Shiny Yanma?

Standard wild encounter odds are 1 in 4,096. With the Shiny Charm, odds drop to 1 in 1,365, and with the Masuda method or Lv. 3 Sparkling Sandwich, down to 1 in 512.

Yanma - Pokédex Wiki

虫, 飞行

特性

加速
复眼
察觉

出现地点

Route 35 (Gold), Route 35 (Silver), Route 35 (Crystal), Great Marsh (Diamond), Great Marsh (Pearl), Great Marsh (Platinum), Route 35 (HeartGold), Route 35 (SoulSilver)

特性

可学会的招式

出现地点