Crimson-crowned fruit dove

The crimson-crowned fruit dove, also the Tongan fruit dove or purple-capped fruit dove (Ptilinopus porphyraceus), is a species of bird in the family Columbidae. It is found in American Samoa, Fiji, Marshall Islands, Niue, Samoa, Tonga, and Wallis and Futuna Islands. Its natural habitats are subtropical or tropical moist lowland forest and subtropical or tropical mangrove forest.

The diet of Ptilinopus porphyraceus is mostly fruit, including figs, Meliaceae, Muntingia, Solanum torvum, Metroxylon amicarum, and ylang ylang.

It is typically solitary, and sometimes seen in pairs; it is believed to be territorial. However, on rare occasions, it has been seen in groups of up to 10.

Taxonomy and systematics
Until 2016, both the purple-capped fruit dove and the Kosrae fruit dove were also considered as subspecies of the crimson-crowned fruit dove. The crimson-crowned fruit dove has two remaining sub-species:
 * P. p. porphyraceus - (Temminck, 1821) : Found on Niue, Tonga and Fiji Islands
 * P. p. fasciatus - Peale, 1848 : Found on Samoa