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Gypceros

A wyvern that can generate disorienting flashes of light when its prominent head crest is struck. Its rubbery hide resists damage and can ward off Shock Traps, while its spit carries a deadly venom. However, they are quite timid.

A Bird Wyvern with a special crest that can give off a blinding light. It runs around quickly and spreads deadly poison. Its rubbery hide is completely immune to the Thunder Element. It likes shiny things and has a habit of collecting ores.
Our translation of モンスターハンターポータブル 2nd G 公式ガイドブック (Enterbrain, 2008), page 252.

Guide book figures for Gypceros

Health

Quests	Health	Capture	Limping
Easy, Village Low Rank	1,320 (840)	30%	20%
Gathering Hall Low Rank	2,640	30%	20%
Village High Rank	2,400 (1,320)	18%	12%
Gathering Hall High Rank	3,240 (1,800)	18%	12%
G-Level	4,680 (2,640)	15%	10%

Capture and Limping are the share of health left when it can be captured and when it starts to limp away. The figure in brackets is its health in quests with two or more of it.

Size

Small	Big	King
942.7	1196.2	1267.1

Small is the most a gold small crown can be. Big and King are the least for a silver and a gold crown.

Status ailments

	Effect	Tolerance	Buildup loss	Rise	Max
Poison	240 damage	200	10 every 5 s	50	400 (500)
Paralysis	10 s	150	5 every 10 s	50	350 (450)
Sleep	40 s	150	5 every 10 s	25	250 (300)
Stun	10 s	150	5 every 10 s	50	350 (450)

Tolerance is the buildup needed for the ailment. It goes up by the Rise figure each time, up to Max; Max in brackets is for G-Level. Poison effect is the total damage, the others are how long it lasts.

When enraged

Attack	Defense	Speed
+30%	-20%	+30%

Attack is the extra damage it deals to hunters. Defense above zero means it takes less damage.

Hitzones

Part	Cut	Impact	Shot	Fire	Water	Ice	Dragon	Stun
Head	30	80	70	50	20	20	10	100
Underneck	50	25	40	30	10	10	10	0
Belly	80	30	20	30	10	10	10	0
Back	70	30	20	20	10	10	10	0
Wings	50	30	30	30	20	20	10	0
Legs	20	20	30	10	10	10	10	0
Tail	90	40	80	30	10	10	10	0

Higher numbers take more damage. Stun is how much impact hits on that part add toward a stun.

Part durability

Head	130
Neck	80
Body	150
Left wing	100
Right wing	100
Left leg	120
Right leg	120
Tail	80

Breaks and tail cuts

Head (Crest)	Bring the head's durability to 0 twice.

Carves and rewards

Carves: Body 3.

Easy

Item	Body	Capture	Break	Drop
Stone ×5	-	-	71% (Head)	-
Power Extract	20%	34%	-	25%
Rubbery Hide	60%	20%	-	-
Poison Sac	10%	46%	-	-
Lightcrystal	-	-	29% (Head)	-
Med Monster Bone	10%	-	-	-
Wyvern Tears	-	-	-	75%

Low Rank

Item	Body	Capture	Break	Drop
Power Extract	20%	-	-	20%
Power Extract ×2	-	34%	-	-
Rubbery Hide	61%	20%	-	-
Iron Ore ×2	-	-	66% (Head)	-
Gypceros Head	1%	-	5% (Head)	-
Poison Sac	10%	-	-	-
Poison Sac ×2	-	46%	-	-
Lightcrystal	8%	-	29% (Head)	6%
Wyvern Tears	-	-	-	74%

High Rank

Item	Body	Capture	Break
Power Extract	23%	-	-
Power Extract	20%*	-	-
Power Extract ×2	-	30%	-
Rubbery Hide	-	10%	-
Rubbery Hide+	43%	18%	-
Rubbery Hide+	30%*	-	-
Gypceros Head	5%	-	5% (Head)
Poison Sac	20%*	-	-
Dragonite Ore	-	-	68% (Head)
Novacrystal	8%	-	7% (Head)
Toxin Sac	18%	-	-
Toxin Sac	10%*	-	-
Toxin Sac ×2	-	42%	-
Lightcrystal	3%	-	20% (Head)
Wyvern Tears	20%*	-	-

G-Level

Item	Body	Capture	Break
Power Extract	18%	-	-
Power Extract	15%*	-	-
Power Extract ×2	-	15%	-
DeadlyPoisonSac	23%	-	-
DeadlyPoisonSac	13%*	-	-
DeadlyPoisonSac ×2	-	42%	-
Rubbery Hide+	-	10%	-
SpecRubberyHide+	43%	18%	-
SpecRubberyHide+	30%*	-	-
Gypceros Head	-	-	10% (Head)
HardGypcerosHead	5%	-	5% (Head)
HardGypcerosHead	7%*	-	-
Dragonite Ore	-	-	58% (Head)
Novacrystal	8%	-	20% (Head)
Purecrystal	3%	-	7% (Head)
Toxin Sac ×2	-	15%	-
Wyvern Tears	10%*	-	-
Wyvern Sobs	25%*	-	-

*: carved while it plays dead.

Figures from モンスターハンターポータブル 2nd G 公式ガイドブック (Enterbrain, 2008), pages 252 and 253.

Quests it appears in

Gypceros: Venomous TerrorPokke Village Chase the Poison Gypceros!Gathering Hall, Low Rank Gathering - Swamp ZoneGathering Hall, High Rank The Poison GasGathering Hall, High Rank Stealing in the Jungle!Gathering Hall, G-Level Gypceros: Venomous TerrorPokke Village The Poison SiegePokke Village Stealing in the Old Swamp!Pokke Village Sleepy Miasma, Poison MistPokke Village

Purple Gypceros

A subspecies of the “Giant Poison Bird,” it lives mainly in the Swamp and confounds its enemies with flashes from its crest and the deadly poison it spits. It is known for its dark purple hide and green neck, and when angered it is more agile and stronger than an ordinary one.
Our translation of モンスターハンターポータブル 2nd G 公式ガイドブック (Enterbrain, 2008), page 254.

The Purple Poison MenaceGathering Hall, Low Rank The Poison GasGathering Hall, High Rank The Purple Poison MenaceGathering Hall, High Rank G-Lvl Gathering - Old SwampGathering Hall, G-Level Old Swamp, Shrouded in MistGathering Hall, G-Level Predators of the SwampGathering Hall, G-Level The Purple Poison MenacePokke Village The Poison SiegePokke Village The Purple Poison MenacePokke Village

Guide book figures for Purple Gypceros