So... I was playing SoulSilver and tried to export some data related to encounters.
The problem is: I couldn't find any data on Headbutting trees on Pokemon Soul Silver.
If I try to check in PokeAPI what pokemons I can find in route 34 by headbutting trees (https://pokeapi.co -> location-area/johto-route-34-area -> [pokemon_encounters]), I can find info from a lot of games, except from SoulSilver.
Ok, maybe serebii.net isn't completely correct, and I shouldn't expect the API to return these 4 pokemons, but the API doesn't return any pokemon on soulsilver by headbutting trees.
Another way to check this is by viewing the raw json of the call mentioned before https://pokeapi.co -> location-area/johto-route-34-area and use "find" on "soulsilver", there will be some encounters there, but all encounters are listed as "walk" "old rod" "surf" and etc, no headbutts.
So... I was playing SoulSilver and tried to export some data related to encounters. The problem is: I couldn't find any data on Headbutting trees on Pokemon Soul Silver.
Let's use Route 34 as an example. You can see in serebii.net (https://www.serebii.net/pokearth/johto/route34.shtml) that you are able to find:
By headbutting trees, in version soulsilver.
If I try to check in PokeAPI what pokemons I can find in route 34 by headbutting trees (https://pokeapi.co -> location-area/johto-route-34-area -> [pokemon_encounters]), I can find info from a lot of games, except from SoulSilver. Ok, maybe serebii.net isn't completely correct, and I shouldn't expect the API to return these 4 pokemons, but the API doesn't return any pokemon on soulsilver by headbutting trees.
Another way to check this is by viewing the raw json of the call mentioned before https://pokeapi.co -> location-area/johto-route-34-area and use "find" on "soulsilver", there will be some encounters there, but all encounters are listed as "walk" "old rod" "surf" and etc, no headbutts.