Oriolus isabellae (Isabela Oriole)
The Isabela Oriole (Oriolus isabellae) is an endemic species of the Oriole family found on Luzon, the Philippines. The bird that was presumed extinct for many years until it rediscovery in December 1993 near Diffun, Quirino, and in Mansarong, Baggao, Cagayan in September 1994. Additional sightings were made in 2004 near San Mariano, Isabela.
- BirdLife International (2005). Oriolus isabellae. 2006 IUCN Red List of Threatened Species. IUCN 2006. Retrieved on 11 May 2006.
- Gamauf, A. and S. Tebbich (1996). "Re-discovery of the Isabela Oriole, Oriolus isabellae." Forktail 11: 170.
- van der Linde, K. (1996). "A further record of the Isabela Oriole (Oriolus isabellae) from Baggao, Cagayan Province, northern Philippines." Forktail 11: 171.
- van Weerd, M. and Hutchinson, R. (2004) "Observations of Isabela Oriole Oriolus isabellae in the Sierra Madre, Luzon, Philippines, with descriptions of the call." Forktail 20: 133-136.133134135136