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- Collocalia isonota
Identification
Distribution
Taxonomy
Two subspecies recognized:
- C. i. isonota: Northern Luzon (northern Philippines)
- C. i. marginata: Southern Philippines (Mindanao, Mindoro and Sulu Archipelago)
It was formerly included in Glossy Swiftlet.
Habitat
Behaviour
Diet
Breeding
Movements
References
- Clements, J. F., T. S. Schulenberg, M. J. Iliff, D. Roberson, T. A. Fredericks, B. L. Sullivan, and C. L. Wood. 2017. The eBird/Clements checklist of birds of the world: v2017, with updates to August 2017. Downloaded from http://www.birds.cornell.edu/clementschecklist/download/
Recommended Citation
- BirdForum Opus contributors. (2021) Ridgetop Swiftlet. In: BirdForum, the forum for wild birds and birding. Retrieved 13 May 2021 from https://www.birdforum.net/wiki/Ridgetop_Swiftlet
