The Euskal Antzara is the traditional goose breed of the Basque Country; there is little documentation of its history. It was kept in limited numbers to supply meat and eggs.[3]: 610
It was included in the official list of Basque breeds of the País Vasco in 2001,[3]: 610 [8] and in 2006 it was added to the Catálogo Oficial de Razas de Ganado de España, the national register of livestock breeds of the Ministerio de Agricultura, Pesca y Alimentación.[3]: 610 [9] It is classified as a Raza Autóctona en Peligro de Extinción, an indigenous breed in danger of extinction.[6]
^ abcdefghMiguel Fernández Rodríguez, Mariano Gómez Fernández, Juan Vicente Delgado Bermejo, Silvia Adán Belmonte, Miguel Jiménez Cabras (eds.) (2009). Guía de campo de las razas autóctonas españolas (in Spanish). Madrid: Ministerio de Medio Ambiente y Medio Rural y Marino. ISBN9788449109461.
^ abOca Basca: Euskal Antzara: Arca del Gusto (in Italian). Bra, Cuneo: Fondazione Slow Food per la Biodiversità Onlus/Slow Food Foundation for Biodiversity. Archived 26 January 2021.