They will simply gain Exp. You can't breed legendary pokemon.
i am pretty sure the answer is no there is not
There is not a daycare in kanto
The DayCare is just at the south of Goldenrod City.
give them to daycare. wait.
It is South of Goldenrod City.
Moltres is the only legendary Pokemon in Mt. Silver for HeartGold / SoulSilver only.
I believe you can.
7 "legendary" Pokemon
The Legendary is Lugia it can be found in whirl islands
Moltas: the fire legendary bird Pokemon the second strongest bird Pokemon
moltress
the only legendary that you can breed is manaphy. and that will result in a phione.