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Philippine Serpent Eagle
Spilornis holospilus

Status: Lower risk

Population Trend: Declining.

Other Names: Philippine Serpent-eagle.

Spilornis holospilus
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Distribution: Indomalayan. PHILLIPPINES (Luzon to Mindanao). more....

Subspecies: Monotypic.

Taxonomy: Sometimes treated as a race of S. cheela (Dickinson et al. 1991), but maintained as a separate species by Ferguson-Lees and Christie (2001) and BirdLife International (2009).

Movements: Probably non-migratory.

Habitat and Habits: Soars high above the forest and forest edge after thermals develop and can be seen soaring throughout the day (Kennedy et al. 2000).

Food and Feeding Behavior: Hunts in the forest canopy for snakes and lizards (Kennedy et al. 2000).

Breeding: The nest and eggs are undescribed, but a bird with an egg in the oviduct was reported in April (Kennedy et al. 2000).

Conservation: Common throughout its limited range, but probbly suffering some declines as a result of the loss of forested habitat. However, this species may be more adpatable to some habitat modification than certain other eagle species. Categorized as a species of "Least Concern" by BirdLife International.

Population Estimates: Ferguson-Lees and Christie (2001) estimated the global population at 10,000 breeding adults or more. BirdLife International (2009) also estimated the number of mature individuals at 10,000, while noting that the supporting data are poor for any estimate.

Important References: 
Clark, W.S. 1994. Philippine Serpent-eagle. Pp. 134 in del Hoyo, J., A.
  Elliott, and J. Sargatal (eds). Handbook of birds of the world. Vol. 2. New
  World vultures to guineafowl. Lynx Edicions, Barcelona, Spain.
Ferguson-Lees, J., and D.A. Christie. 2001. Raptors of the world. Houghton
  Mifflin, Boston, MA.
Kennedy, R.S., P.C. Gonzales, E.C. Dickinson, H.C. Miranda, Jr., and T.H.
2000. A guide to the birds of the Philippines. Oxford University
  Press, Oxford, UK.
Lerner, H.R., and D.P. Mindell. 2005. Phylogeny of eagles, Old World
  vultures, and other Accipitridae based on nuclear and mitochondrial DNA.
  Molecular Phylogenetics and Evolution 37:327-346.

Last modified: 6/11/2010

Recommended Citation: Global Raptor Information Network. 2022. Species account: Philippine Serpent Eagle Spilornis holospilus. Downloaded from http://www.globalraptors.org on 27 Jan. 2022

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