|Most recent IBA monitoring assessment|
|Year of assessment||Threat score (pressure)||Condition score (state)||Action score (response)|
|2018||very high||very unfavourable||medium|
|For more information about IBA monitoring please click here|
Mt Irid and Mt Angilo are located on the boundaries between the provinces of Bulacan, Quezon and Rizal, about 40 km to the north-east of Metro Manila, in the southern Sierra Madre mountains. Despite the close proximity to the city, there are very few roads into these rugged mountains, and they are sparsely populated. An extensive stand of what appeared to be old growth dipterocarp forest was located there (above 400 m) during a recent forest mapping survey (SOURCE?). Mt Irid rises to 1,448 m and Mt Angilo to 1,315 m, so there must be areas of montane forest around their peaks, but there are also likely to be substantial areas of lowland forest on the slopes.
This IBA is virtually unknown ornithologically, although there is an old record of Philippine Eagle near its western boundary. The extensive lowland and montane forests which are reported to remain there could prove to be important for the eagle, and to support populations of many of the other threatened and restricted-range birds of the Luzon Endemic Bird Area. The avifauna could prove to be similar to that of nearby Angat Dam (PH019) and the IBAs further north in the Sierra Madre.
Non-bird biodiversity: No mammal and herpetofaunal surveys have yet been conducted in this IBA.
BirdLife International (2020) Important Bird Areas factsheet: Mounts Irid-Angilo and Binuang. Downloaded from http://www.birdlife.org on 28/10/2020.