| Island (AFe+)|
| 3,000 Bells (AFe+, WW)|
4,000 Bells (CF, NL)
|Size||Available in rain|
|Time of year||Time of day|
| June to September (AFe+, WW, CF)|
March to September (NL)
|8 am to 5 pm|
|Scientific name||Ornithoptera alexandrae|
|Family||Papilionidae - Butterflies|
|Appearances||AFe+, WW, CF, NL|
|Rarity|| Scarce (★★★★) (AFe+, WW, CF), |
Uncommon (★★★) (NL)
|Regional names|| Ornithoptère |
Mariposa alas pájaro
- "I caught a birdwing butterfly! Wow! It's about the size of a bird!" —New Leaf
The birdwing butterfly (アレクサンドラアゲハ, Arekusandora-ageha?), is the rarest butterfly in the Animal Crossing series, reference to its immense size and rarity in real life. It can be found during the Summer, between the months of June and September, between 8am to 5pm.
It can be found flying near flowers in Animal Crossing: Wild World but in Animal Crossing: City Folk and Animal Crossing: New Leaf tends to appear anywhere. In Animal Forest e+ it appears solely on the Island behind Oak Trees similar to the Purple Butterfly, requiring the player to bring fruit or saplings from their town to plant there. In that game it will appear high above the trees when the player first enters the acre but unlike the purple butterfly it does not descend and will permanently circle out of reach. When agitated by throwing the net or running nearby, it will finally descend and flee.
Donating to the museum
In Animal Forest e+On donation it flies at the bottom left of the museum around the Coconut Palm where the crabs reside.
In Wild World
Blathers will say:
"Though I know this is a type of tiger butterfly, its size is simply monstrous! Are you trying to terrify me with this behemoth? No, you wouldn't do that. Rather shabby of me to suggest you would... Please accept my apologies!"
It can be found on or flying around the row of flowers on the right of the first room, with the other butterflies.
In City Folk
Blathers will say:
"Hoo my, what a butterfly... I now see why it's touted as the world's largest butterfly, eh wot? I'd heard the wings of this particular butterfly can extend over a foot...but up close, they look bigger still! If one of these flew into me while I was out flying... I'd likely pass out in horror and plummet on the spot!"
In New Leaf
When observing it in the Museum:
"The world's largest butterflies, birdwing butterflies, have wings that can measure 30 cm long. The females have longer wings than the males, while the males' wings have a deeper blue color. Though they are extremely popular with collectors, international trading is either limited or fully banned."
It can be found on it's information sign in the top-left room.
- "I caught a birdwing butterfly! A green light in midair!" —Wild World
- "I caught a birdwing butterfly! Tweet tweet, flap flap?" —City Folk
「アレクサンドラアゲハを捕まえた！ Ｏｈ！ アレクサンドラァ～！！」 —Animal Forest e+
When the player has caught the Birdwing butterfly, they can find information about it in the bug menu. Below is the information regarding the birdwing:
Animal Forest e+
| "The largest butterflies in the world, they have been mistaken for birds and shot."|
- Main article: Queen Alexandra's birdwing on Wikipedia
Queen Alexandra's birdwing butterfly is the largest species of butterfly in the world: its wings can reach a span of over 25cm. It is only found in the forests of Papua New Guinea. It is endangered, and is one of the three species of insect which are illegal to trade worldwide. The species was named after Alexandra of Denmark. Due to their large size, the species has few natural predators: only a few spiders and birds are capable of taking one down. Due to their large size and high flying patterns, it is not uncommon for poachers to resort to using shotguns to capture these butterflies.