Joan Roca i Caball Joan Roca i Caball Joan Baptista Roca i Caball (1898–1976) was a Catalan Carlist and Christian-Democratic politician. He is known as co-founder of Unió Democràtica de Catalunya and recognized as representative of a "Third Spain", the group which emerged during the Spanish Civil War and claimed to have stood in-between the warring factions. He is also counted among leaders of the Catalan opposition to Francoism. The Roca family has traditionally owned vineyards in the Barcelona province; heavily hit by the phylloxera plague in the mid-19th century, it was driven out of business. Joan's paternal grandfather, Antonio Roca Calvet (1840-1917), inherited
Montserrat and an ex-situ captive breeding population has been set up in partnership with Durrell Wildlife Conservation Trust, Zoological Society of London, North of England Zoological Society, Parken Zoo and the Governments of Montserrat and Dominica. Releases from this programme have already taken place in a hope to increase the numbers of the frog and reduce extinction risk from Chytridiomycosis. The national bird is the endemic Montserrat oriole ("Icterus oberi"). The IUCN Red List classifies it as Vulnerable, having previously listed it as Critically Endangered. Captive populations are held in several zoos in the UK including: Chester Zoo, London Zoo, Jersey