Demography and Populations

Body Parasites

In a survey of haemosporidian parasites in the central Philippines, a single tested T. cinnamomea unirufa was negative for all haemosporidians (73 Silva-Iturriza, A., V. Ketmaier, and R. Tiedemann (2012). Prevalence of avian haemosporidian parasites and their host fidelity in the central Philippine islands. Parasitology International 61:650–657. Close ). A specimen of T. c. talautensis (RMNH.AVES.84625_1) had 10 cm long threadworms.

Numbers

The global population size has not been quantified, at the species level or for each subspecies group separately. Terpsiphone c. cinnamomea is noted as being especially common on smaller islands (24 Allen, D. (2020). Birds of the Philippines. Lynx Edicions, Barcelona, Spain. Close ). On Samar, it is found in all five watersheds surveyed in Samar National Park (74 Patindol, T. A. (2016). Post biological assessment of faunal resources in the Samar Island Natural Park. Annals of Tropical Research 38(2):52–73. Close ). It is also present at low abundances in Pasonanca National Park, Zamboanga City, Mindanao (75 Paguntalan, L. M. J., P. G. Jakosalem, M. Lagerqvist, J. Nordin, G. Fernandez, M. de la Cruz, and A. Baysa (2011). Bird observations on the Zamboanga Peninsula, Mindanao, Philippines. Forktail 27:15–22. Close ). T. c. unirufa is considered to be very rare and a low-density species on Mindoro (76 Dutson, G. C. L., T. D. Evans, T. M. Brooks, D. C. Asane, R. J. Timmins, and A. G. Toledo (1992). Conservation status of birds on Mindoro, Philippines. Bird Conservation International 2(4):303–325. Close ) and apparently rare in Bataan, Luzon as well (21 Gilliard, E. T. (1950). Notes on a collection of birds from Bataan, Luzon, Philippine Islands. Bulletin of the American Museum of Natural History 94(8):457–504. Close ). It was reportedly generally scarce but common at Cape Engaño (39 Whitehead, J. (1899). Field-notes on birds collected in the Philippine Islands in 1893-6. Ibis 41(1):81–111. Close ). On Talaud, it is common in all wooded habitats on Karakelong (including the unique scrub on Mt. Piapi) and Salebabu in 1995. It is especially common in forest habitats and even in scrub and cultivation fields (69 Eaton, J. A., B. van Balen, N. W. Brickle, and F. E. Rheindt (2016). Birds of the Indonesian Archipelago: Greater Sundas and Wallacea. Lynx Edicions, Barcelona, Spain. Close ).

Trends

It is thought to be stable with no evidence for declines or serious threats, but this has not been evaluated in detail.