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AI TypeBumblebirb AI
Damage160 / 256 / 281 / 296 (Contact)
240 / 384 / 480 / 552 (Charge)
120 / 200 / 250 / 287 (Lightning Feather)
Max Life227,500 / 364,000 / 404,000
KB Resist100%
Immune toAll debuffs except:
Ichor (debuff)Cursed InfernoExo FreezeAbyssal FlamesArmor CrunchDemon FlamesGod Slayer InfernoNightwitherShredWhispering DeathSilva StunShellfish ClapsEnraged
Coins30 Gold Coin
Bumblebirb map.png
Map Icon

size=25px "A failure of twisted scientific ambition..." size=25px

Bumblebirb is a post-Moon Lord boss fought in the Jungle.

It drops Effulgent Feathers, which are needed to craft the Dragon Egg, the item that summons Jungle Dragon, Yharon, as well as the Silva armor set.

Spawn[edit | edit source]

Bumblebirb can be spawned by the player using Birb Pheromones in the Jungle.

Behavior[edit | edit source]

Phase 1[edit | edit source]

  • Attempts to ram into the player.
  • Periodically lines up horizontally with the player and attempts to charge into them.
  • Frequently lets out bursts of electrified feathers, which fly upwards before curving back towards the player. When they get close to the player, they will slow down before launching themselves at them.
  • Occasionally lands to spawn small Bumblebirbs, which will try to ram into the player. Up to 2 small Bumblebirbs can be alive at once.

Phase 2[edit | edit source]

  • Enters at 50% / 75% / 100% life.
  • Can now only keep 1 small Bumblebirb alive at once.
  • Repeatedly charges at the player and fires a homing feather every time it charges.
  • Will occasionally stop to fire a red orb that erupts into a pillar of red light on contact with the player or a surface. The pillar deals contact damage and summons lightning from the sky as long as the player is in contact with it.

Phase 3[edit | edit source]

  • Enters at 10% / 25% / 40% life.
  • No longer summons small Bumblebirbs.
  • Red orbs now cause two pillars to appear on either side of the player.

In Revengeance Mode[edit | edit source]

  • Enters Phase 2 at 75% life and Phase 3 at 25% life.
  • Speed is greatly increased.
  • Maximum amount of small Bumblebirbs in Phase 1 increased to 3.

In Death Mode[edit | edit source]

  • Enters Phase 2 at 100% life and Phase 3 at 40% life.
  • Maximum amount of small Bumblebirbs in Phase 2 increased to 2.
  • Fires a spread of feathers every time it summons a small Bumblebirb.

Summons[edit | edit source]

AI TypeBumblebirb (Small) AI
Damage110 / 220 / 242 / 255 (Contact)
165 / 330 / 363 / 382 (Charge)
Max Life30,000 / 60,000
KB Resist100%

Aftermath[edit | edit source]

Tips[edit | edit source]

For more elaborate strategies on defeating Bumblebirb, including weapon and arena recommendations, see Guide:Bumblebirb strategies.
  • Bumblebirb is incredibly quick, making high acceleration and max speed a must.
  • Focus on the main Bumblebirb as much as possible. Defeating the smaller ones is futile, as more will easily spawn in their place.
  • Circling the Bumblebirbs is an effective way to avoid being hit, as they reduce in speed when changing direction. Make sure to dodge the feathers, however, as they can easily swarm the player.

Trivia[edit | edit source]

  • Bumblebirb's theme is Murderswarm, which was composed by the artist DM DOKURO.
    • This theme contains a motif from the Jungle Dragon, Yharon's first phase theme.
    • If the Calamity Music add-on mod is disabled, Boss 4 will play instead.
  • Its name may be a combination of "bumblebee" and "bird", which, given the lore's mentioning of their incredibly high reproductive rates, may be a reference to the phrase 'The Birds and the Bees'.
    • The term 'birb' comes from an internet meme.
  • In the mod's source files, it is referred to as 'Bumblefuck'.

Lore[edit | edit source]

The Bumblebirb, created by Yharim in a failed experiment to engineer an army of lesser Yharon clones, was released into the Terraria Jungle to wander aimlessly and attack those strong enough to pose a threat to Yharim himself. They have the uncanny ability to replicate/reproduce with themselves in order to mass-produce more tiny Bumblebirbs that will eventually grow into larger birbs. The only thing preventing the birbs from overpopulating the entire Jungle is their engineered "hormonal reproduction limit" protocol. This protocol shuts down the birb's sexual hormones when there are a large amount of other birbs present near them, preventing the birbs from reproducing with themselves further.