Roc and Thunderbird

Stronghold creatures
Level 1
Goblin
Hobgoblin
Level 2
Wolf Rider
Wolf Raider
Level 3
Orc
Orc Chieftain
Level 4
Ogre
Ogre Mage
Level 5
Roc
Thunderbird
Level 6
Cyclops
Cyclops King
Level 7
Behemoth
Ancient Behemoth
Towns

Statistics
Roc
Cost per troop  600
	Attack 13 Defense 11 Damage 11–15 Health 60 Speed 7 Movement Flying Size 2 Growth 3 AI Value 1027
Thunderbird
Cost per troop  700
	Attack 13 Defense 11 Damage 11–15 Health 60 Speed 11 Movement Flying Size 2 Growth 3 AI Value 1106
Special abilities:
• Lightning strike

Rocs and Thunderbirds are the level 5 creatures of Stronghold. They are recruited from the Cliff Nest.

"Rocs and thunderbirds are the only flying units available at Stronghold towns. When thunderbirds attack, there is a 20% chance thunderbolts will strike their target, delivering 10x the number of attacking thunderbirds in additional damage." ^{RoE manual}

Special Ability: Lightning Strike

Thunderbirds have special ability lightning strike, which has 20% probability to occur after the stack have attacked, including retaliations. When the stack attacks, the lightning strike occurs before the enemy has a chance to retaliate. If successful, the lightning strike deals additional damage for the amount of ten times the number of attacking Thunderbirds. The thunderbolts have the same visual effect as the spell Lightning Bolt, and the special attack is also counted as one in terms of immunities and Golems' spell damage reduction (e.g. if 14 Thunderbirds attack a stack of Diamond Golems with a lightning strike, they will do 7 damage instead of 140 because Diamond Golems have 95% spell damage resistance). Since the attack is considered to be the Lightning Bolt spell, it also deals extra damage to  Air Elementals  and  Storm Elementals .

Heroes with a specialty

• Shiva the Barbarian has rocs as a specialty, which increases the attack and defense skills of any rocs or thunderbirds for each level attained after 5th level and gives them a speed bonus of 1.

Official Renders

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User commentary

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Since they are the only flying Stronghold unit, the rocs and thunderbirds usually die in large numbers if they are to be sent to attack the enemy straight away. They should be used tactically and not draw too much damage towards themselves, even if their health stat is the third highest for a level 5. Their defense is also pretty low. Try to upgrade Rocs to Thunderbirds as soon as possible, as with speed 7 Rocs are quite useless. For that reason, capturing Rocs' external dwellings is not that difficult (however, beware of first turn right, and if you cannot kill all 9 Rocs guarding the dwelling at the same time, Slow is still a good idea as the guardians may attack twice due to high morale, reaching some of your troops). Since the lightning strike deals direct damage that is unaffected by most combat modifiers, it's most effective against heavily armored stacks, although with only a 20% chance of occurring it cannot be relied upon.

See also:

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• List of creatures
• List of creatures (HotA)
• Comparison of Level 5 Creatures