The Fernando Po speirops is endemic to a country with what official language?
Fernando Po speirops The Fernando Po speirops ("Zosterops brunneus"), also known as the Bioko speirops, is a species of bird in the family Zosteropidae. It is endemic to Bioko Island in Equatorial Guinea.
Guarani language Guarani ( or ), specifically the primary variety known as Paraguayan Guarani (endonym "avañe'ẽ" ] 'the people's language'), is an indigenous language of South America that belongs to the Tupi–Guarani family of the Tupian languages. It is one of the official languages of Paraguay (along with Spanish), where it is spoken by the majority of the population, and where half of the rural population is monolingual. It is spoken by communities in neighboring countries, including parts of northeastern Argentina, southeastern Bolivia and southwestern Brazil, and is a second official language of the Argentine province of Corrientes since 2004; it is also an official language of Mercosur.