Mutated Terrorbird | OSRS Index

Mutated Terrorbird



Released		13 September 2023 (Update)
Members		Yes
Combat level		178
Size		3x3
Examine		Looks even nastier than the normal ones.
League region		Kandarin✓

Combat info

XP bonus		+0%
Flat armour		-2
Max hit		16
Aggressive		No
Poisonous		No
Attack style		Ranged, Crush
Attack speed		4 ticks (2.4 seconds)

Slayer info

Slayer level		56
Slayer XP		3,200 xp
Category		Warped Creatures
Assigned by

Combat stats


320	90	150	40	110	75

Aggressive stats


+0	+0	+0	+0	+400	+0

Melee defence


+50		+50		+0

Magic defence


+0			No elemental weakness

Ranged defence


+62		+62		+62

Immunities

Poison		100% resistance
Venom		100% resistance
Cannons		Not immune
Thralls		Not immune

Open in DPS calculator
Advanced data

Monster ID		12464
Link		MOID

The Mutated Terrorbird is a superior variant of the warped terrorbird. It has a chance of spawning after purchasing the unlock Bigger and Badder for 50 Slayer reward points from any Slayer master.

Drops

In addition to 100% drops and tertiary drops, superior slayer monsters will always roll 3 additional items, of which only 1 roll may be from the superior unique table. The other rolls are performed on the regular counterpart's table; their displayed drop chances represent a single roll.

Drop rates are estimated based on 1,291,797 samples from the Drop Rate Project, unless otherwise cited.

The average Mutated Terrorbird kill is worth 116,372.94.

100%

	Item	Quantity	Rarity	Price	High Alch
	Bones	1	Always	30	0
	Brimstone key	1	Always^{[d 1]}	Not sold	N/A

^ Brimstone keys are only dropped if killed on a Slayer task given by Konar quo Maten.

Weapons and armour

Item	Quantity	Rarity	Price	High Alch
Adamant warhammer	1	3 × 2/64	2,308	2,472
Adamant platebody	1	3 × 2/64	9,440	9,984
Rune battleaxe	1	3 × 1/64	24,639	24,960
Rune kiteshield	1	3 × 1/64	32,110	32,640
Rune warhammer	1	3 × 1/64	24,528	24,900

Runes and ammunition

Item	Quantity	Rarity	Price	High Alch
Air rune	80–120	3 × 6/64	400–600	160–240
Earth rune	80–100	3 × 6/64	400–500	160–200
Death rune	15–20	3 × 3/64	2,775–3,700	1,620–2,160
Law rune	15–20	3 × 3/64	1,845–2,460	2,160–2,880
Soul rune	10–15	3 × 3/64	3,800–5,700	1,800–2,700

Other

Item	Quantity	Rarity	Price	High Alch
Coins	600–800	3 × 8/64	600–800	600–800
Adamantite ore	3–5 (noted)	3 × 2/64	1,620–2,700	720–1,200
Weapon poison	1	3 × 3/64	232	86
Diamond bolt tips	24–32	3 × 3/64	4,056–5,408	1,896–2,528
Feather	100–200	3 × 4/64	300–600	100–200
Raw shark	3–7 (noted)	3 × 5/64	2,154–5,026	306–714
Swamp tar	40–60	3 × 5/64	120–180	0
Chocolate bomb	2–3	3 × 3/64	910–1,365	2–3

Rare drop table

There is a 3/64 chance of rolling the gem drop table.

Item	Quantity	Rarity	Price	High Alch
Nothing	N/A	3 × 1/42.74; Never^{[d 1]}	N/A	N/A
Uncut sapphire	1	3 × 1/85.33; 1/43.33^{[d 2]}	228	15
Uncut emerald	1	3 × 1/170.67; 1/86.67^{[d 2]}	473	30
Uncut ruby	1	3 × 1/341.33; 1/173.33^{[d 2]}	1,087	60
Nature talisman	1	3 × 1/910.22; 1/462.22^{[d 2]}	268	2
Uncut diamond	1	3 × 1/1,365.33; 1/693.33^{[d 2]}	2,439	120
Rune javelin	5	3 × 1/2,730.67; 1/1,386.67^{[d 2]}	675	1,200
Loop half of key	1	3 × 1/2,730.67; 1/1,386.67^{[d 2]}	9,756	60
Tooth half of key	1	3 × 1/2,730.67; 1/1,386.67^{[d 2]}	9,887	60
Rune spear	1	3 × 1/43,690.67; 1/2,600^{[d 2]}^{[d 3]}	11,599	12,480
Shield left half	1	3 × 1/87,381.33; 1/5,200^{[d 2]}^{[d 3]}	65,355	66,000
Dragon spear	1	3 × 1/116,508.44; 1/6,933.33^{[d 2]}^{[d 3]}	38,438	37,440

^ The "nothing" drop is removed while wearing a ring of wealth.
^ ^2.00 ^2.01 ^2.02 ^2.03 ^2.04 ^2.05 ^2.06 ^2.07 ^2.08 ^2.09 ^2.10 The drop rate is increased while wearing a ring of wealth due to the "nothing" drop being removed.
^ ^3.0 ^3.1 ^3.2 Only dropped if Legends' Quest has been finished; if not, a talisman is dropped instead.

Tertiary

Item	Quantity	Rarity	Price	High Alch
Terrorbird wing	1	1/4^{[d 1]}	Not sold	0
Clue scroll (hard)	1	Rare^{[d 2]}	Not sold	12
Warped sceptre (uncharged)	1	1/320^[1]	89,479	90,000

^ Terrorbird wings are only dropped during Rag and Bone Man II.
^ Clue scrolls will drop as scroll boxes after the completion of X Marks the Spot.

Superior Slayer tertiary

The chance to spawn a superior creature is 1/200.^{[d 1]}

Item	Quantity	Rarity	Price	High Alch
Mist battlestaff	1	1/233	67,507	9,300
Dust battlestaff	1	1/233	9,007	9,300
Eternal gem	1	1/816	9,016,138	5,700
Imbued heart	1	1/816	78,122,981	300,000

^ The superior creature spawn rate increases to 1/150 after unlocking the elite Combat Achievements rewards tier.

Changes

Date	Changes
8 May 2024 (Update)	Superior slayer monsters are now guaranteed to drop brimstone keys when on a task from Konar.

References

^ "Poll 80 & Shooting Stars Changes". Old School RuneScape News. Jagex. 20 September 2023. Archived from the original. "In accordance with tradition, we can now confirm that the drop rate for the Warped Sceptre is 1/320."

Slayer monsters

Slayer Tower

Fremennik Slayer Dungeon

Lumbridge Swamp Caves

Karuulm Slayer Dungeon

Wyvern Cave

Catacombs of Kourend

God Wars Dungeon (Wilderness)

Neypotzli

Ruins of Tapoyauik

Others

	Desert Lizard Pyrelord Mogre Harpie Bug Swarm Killerwatt Vyre Sentinel Molanisk Terror dog Sea snake Young Hatchling Fever spider Brine rat Gryphon Boss Juvenile custodian stalker Warped Terrorbird Warped Tortoise Mutated Zygomite Ancient Cave horror Basilisk Knight Lava Strykewyrm Dust devil Mature custodian stalker Skeletal Wyvern Venator Aquanite Elder custodian stalker Cave kraken boss Dark beast Araxyte boss Cerberus Smoke devil boss
Superior monsters	Crushing hand Chasm Crawler Screaming banshee Twisted Giant rockslug Cockathrice Flaming pyrelord Infernal Monstrous basilisk Malevolent Mage Insatiable Bloodveld Mutated Dire Gryphon Vitreous Jelly Warped Chilled Spiked Turoth Mutated Terrorbird Mutated Tortoise Cave abomination Abhorrent spectre Repugnant Basilisk Sentinel Magma strykewyrm Shadow Wyrm Choke devil King kurask Blood-starved venator Marble gargoyle Ancient Custodian Elder Aquanite Nechryarch Guardian Drake Greater abyssal demon Night beast Nuclear smoke devil Dreadborn Araxyte Colossal Hydra

Source site	Old School RuneScape Wiki
Canonical source	Mutated Terrorbird
Content license	CC BY-NC-SA 3.0
License status	declared
Picture	Mutated Terrorbird · file details