| No. of islanders
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Owls are a type of bird in the Animal Crossing series, first appearing in Animal Crossing for GameCube. Blathers was the only owl in Animal Crossing, but when The Roost and the Observatory were introduced, Celeste, Blathers' sister, was also introduced. The owls are only special characters, not villagers. The museum wasn't featured in Doubutsu no Mori, hence, no owls were present in the game. During the night, the bulletin board has a small owl on top instead of a bird, as in the day.
Blathers is the curator of the town's museum. He is the one who accepts any donation that the player may have for the museum's exhibits and, from Animal Crossing: Wild World forward, can identify fossils dug up by the player. In addition, the curator is skilled at determining whether a work of art - either a painting or a sculpture - is a forgery or not. Because he is an owl (a nocturnal creature), he is fast asleep during the daytime and wide awake at night.
Celeste is the younger sister of Blathers and also works at the museum. In Wild World and Animal Crossing: City Folk, she runs the observatory, where players are able to stargaze and create their own constellations, on the second floor of the museum, but in Animal Crossing: New Leaf, she instead is the proprietor of the museum's gift shop, as well as the handler of the second floor's four free exhibit spaces. Celeste sleeps in the daytime and is awake at night, similar to her sibling.