i think u get it from mail from your mom
pokemon heart gold
talk to a guy in viridian city
But if you get the silver wing, you just cant go to whirl islands and find Lugia. You have to get a diffrent feather. You can figure that out on your own.
simple go to pewter city in kanto then talk to the guy next to the Pokemon store
a man in pewter city gives it to you
You dont All you need is the rainbow feather
Well, you can't, really. I mean, it's a key item (and if you COULD sell them and did, the game would be ruined).
well first you get to the Kanto region by beating the guy on mt. silver then there is a town called pewter city. In pewter city you will get the feather from the old person right next to the poke mart.
The Pokémon on the cover of SoulSilver is Lugia, a Pokémon which originated in the Gold/Silver era back in 1999. You can obtain it in either HeartGold or SoulSilver after getting the Silver Feather.
It isn't found it is given to you by the director of The Goldenrod City Radio Tower director. You have to beat Team Rocket and the director will hand it to you.
You get the silver feather from someone in Pewter city. From there, you can catch Lugia at Whirl Islands. He'll be level 70.
In heartgold, Lugia is obtainable at the Whirl Islands but u need to obtain the silver feather from a guy in Pewter City. Once u have that silver feather, u can go deep into the Whirl Islands and find Lugia.