Unless your Delibird is pretty high leveled, I don't think that it would be very useful in a gym battle.
You battle the 8th gym leader, Clair, at Blackthorn City.
You go through the ice cave & help kimono girl that is stuck on the ice and then keep going on your trip through the cave then you will be @ Blackthron city and then you can challenge Claire. She is a dragon type. I used a fighting type 2 win. Lucario woks the best i found out, but you don't get him in Soul Silver or Heart Gold. You get him from Pearl, Diamond & Platinum as far that I know. If you don't feel like shopping then you can wirelessly trade four a lucario but you have to have seen it before you try to get one.
Once you get the 7th badge (or 8th, don't remember exactly) and come back through you can go higher in the tower to defeat team rocket.
whenever u beat team rocket at the warehouse in goldenrod
move to the 8th gym
Blue is the 8th kanto gym leder.
In the original Pokemon Silver you had to beat the 8th gym leader, Claire, then she allowed you to pass.
the 8th gym when u beet Clair her Pokemon are strong so be careful
you go to blackthorn city to fight the 8th gym leader
blackhorn city i think its next to mahogany town
Well Claire has dragon types so you need Ice types to defeat her.
There was no Shaymin event for Soul Silver, only Diamond, Pearl and Platinum, which ended on November 8th 2009
Blue (he is weak if you have lvl 100 pokemon. ) Good luck! He has a lot of different types
1, after professor elm gives you a call after your 7th or 8th gym badge. Hope I helped. :) Pete
cindber island
she is a dragon trainer, so use dragon moves or just slam her down hard(twss)