D. & Ramos, Jaime (1992): Studies of West Palearctic birds, 191. Bibby, Colin J.; Charlton, Trevor D.: Observations on the São Miguel bullfinch, Açoreana 7 (1991), pp. 297–304 BirdLife International (BLI) Species Factsheet Bibby, Colin J.; Charlton, Trevor D. & Ramos, Jaime (1992): Studies of West Palearctic birds. Azores Bullfinch In: British Birds 85(12): 677–680. Ceia, R. (2008). Monitorização da população de Priolo. Relatório da acção F6 do Projecto LIFE Priolo. SPEA: Lisbon. Ramos, Jaime A. (Compiler). (1995). Action Plan for the Azores Bullfinch. Ramos, J.A. (1998). Biometrics, weights, breeding and moulting seasons of passerines in an Azores cloud forest. Ringing and Migration 19: 17–23. Ramos, Jaime A. (March 2000). Azores Bullfinch Pyrrhula murina. Bulletin of the African Bird Club 7(1). Azores Bullfinch Pyrrhula murina Sociedade Portuguesa para o Estudo das Aves (SPEA): Priolo Centro Priolo - Sociedade Portuguesa para o Estudo das Aves (SPEA) Vester, F., Diamond, A. W., Peterson, R. T. (1989): Save the Birds – Houghton Mifflin External links Birding Azores – Azores Bullfinch ARKive: images and movies of the Azores bullfinch (Pyrrhula murina) Europe's rarest finch finds favour Centropriolo – Conservation website for the Priolo Azores bullfinch Birds of the Azores Endemic fauna of the Azores Azores bullfinch Azores bullfinch