From Muppet Wiki

Big Bird is perhaps the least used character in international Sesame Street adaptations.

Instead, most shows have their own walk-around Big Bird equivalent, often a bird like Caponata on Barrio Sesamo, or Minik Kus on Turkey's Susam Sokagi. Since Big Bird is primarily a Street character, his few inserts are seldom used.

Zhima Jie in China employs Big Bird's "identical cousin" Da Niao (literally, "Big Bird").

The following, however, are a few of the productions where the real Big Bird is dubbed and/or renamed.

Country/Show	Name	Performer	Picture
Canada, Canadian Sesame Street (Quebecois, 1970s)	Big Bird	Benoit Marleau
Germany, Sesamstrasse	Bibo	Wolfgang Draeger
Mexico, Plaza Sesamo	Big Bird	Eduardo Garza
The Netherlands, Sesamstraat videos	Neef Jan	Olaf Wijnants
Poland, Ulica Sezamkowa	Wielki Ptak	Aleksander Mikołajczak
Spain, The Adventures of Elmo in Grouchland	Paco Pico	Alberto Mieza

Book Translations

Big Bird's many book appearances, when translated into other languages, have been inconsistent in their name usage, and often borrow the name of that country's Big Bird counterpart. Thus, in Dutch translations, Big Bird is often presented as Pino from Sesamstraat. He justifies this in the album Ernie Heeft Rommel Gemaakt (collecting Ernie's Big Mess and other stories), by claiming he's wearing his yellow feather suit.

The Spanish translations for Mexico and the Southwest United States of America are particularly inconsistent. In some books, apparently intended primarily for bilingual Americans, no attempts at translation are made at all, as in A Visit to the Sesame Street Library, where'e he's simply "Big Bird." In the 1991 translation of Nothing to Do (Nada Que Hacer), he's "Gran Pajaro" (while Granny Bird is "Abuelita" and Radar is "Tito"). However, Big Bird Goes to the Doctor is translated as Montoya Va el Doctor, borrowing the name of the bird on Plaza Sesamo.