National Park

	HeartGold	SoulSilver
Walking in tall grass or a cave
Caterpie	+20% L10 +20% L10 +20% L12 +10% L10 +10% L10
Hoothoot	+60% L10–14 +40% L10–12	+60% L10–14 +40% L10–12
Kakuna		+20% L10 +20% L10 +10% L10 +10% L10
Metapod	+20% L10 +20% L10 +10% L10 +10% L10
Minun	+20% L12	+20% L12
Pidgey	+20% L10–14 +15% L12–14	+20% L10–14 +15% L12–14
Plusle	+20% L10	+20% L10
Shinx	+40% L10–12	+40% L10–12
Sunkern	+5% L10 +10% L12 +10% L12	+5% L10 +20% L12
Weedle		+20% L10 +20% L10 +30% L10–12 +10% L10