Website and data research by 101Leafy.

Guay

For The Legend of Zelda: Majora's Mask on Nintendo 64 (2000).

Tatl says

It's a Guay. You don't know about this one? Just attack it before it swoops down on you. That's all there is to it.

Health1
EnglishGuay
FrançaisKor-Bec
DeutschSchwarze Wüstenkrähe
EspañolGuey
日本語グエー

Damage

How hard each weapon hits the Guay, and how many hits it takes to defeat it. A jump attack with a sword or a Deku Stick hits twice as hard.

AttackPowerMultiplierHits to defeat
Kokiri Sword1×11
Razor Sword2×11
Gilded Sword3×11
Great Fairy's Sword4×11
Kokiri Sword: Spin Attack1×11
Razor Sword: Spin Attack2×11
Gilded Sword: Spin Attack3×11
Great Fairy's Sword: Spin Attack4×11
Deku Stick2×11
Fierce Deity's Mask: sword4×11
Fierce Deity's Mask: Spin Attack4×11
Fierce Deity's Mask: sword beam3No damageNo damage
Goron Mask: punch2×11
Goron Mask: Goron Pound4×11
Goron Mask: roll1No damageNo damage
Goron Mask: roll with spikes1×11
Zora Mask: punch1×11
Zora Mask: boomerang fins2×11
Deku Mask: bubble blast2×11
Deku Mask: spin attack1×11
Deku Mask: launch from a Deku Flower2×21
Hero's Bow2×11
Fire Arrow2×21
Ice Arrow2×21
Light Arrow2×21
Bomb2×11
Powder Keg4×11
Deku Nut1No damageNo damage
Hookshot2×11

Hits to defeat calculator

Drops

When the Guay is defeated, one of 16 slots is picked at random, so each slot is a 6.25% chance.

These places use this table: Ikana Canyon, Stone Tower Temple, Ancient Castle of Ikana, Great Bay Coast, Mountain Village, Snowhead, Path to Goron Village

DropChance
Green Rupee18.75%
Blue Rupee12.5%
Nothing68.75%

Some of them use this table instead:

DropChance
Blue Rupee ×356.25%
Red Rupee43.75%

Arrows need the Hero's Bow and bombs need a Bomb Bag; magic needs the magic meter. Without them that slot drops nothing. A Recovery Heart at full health becomes a Green Rupee.

The arrow that defeats it decides the drop, whatever the slot: a Fire Arrow gives 30 Arrows, an Ice Arrow a Recovery Heart, and a Light Arrow a Purple Rupee.

Where to find it

Official guide

It attacks from outside your field of view. It moves fast, so rather than aiming arrows at it, defeat it with your sword when it comes close.

ゼルダの伝説 ムジュラの仮面のすべて (エンターブレイン, 2000), p. 189: Translated by 101Leafy

These purple birds like nothing more than to swoop down and peck Link to death. Shoot them with an arrow or hit them with your Sword when they come in range.

The Legend of Zelda: Majora's Mask, Prima's Official Strategy Guide (Prima Games, 2000), p. 131