- Ducula radiata
36–39 cm (14-15½ in)
- head, neck sides, breast and underparts light grey
- hind neck purple (both genders) and/or extending on to mantle (male)
- undertail coverts chestnut
- upper and undertail dark grey with a medial lighter grey band
- Bill and feet dark
- Eye dark chestnut
Male has more extensive purple hind neck / mantle.
Found within and at the edges of dense montane forests. Generally at heights between 200 and 2400 m.
They feed in flocks in the understorey, but there is no information about their actual diet.
Their nests are placed on cliff ledges with eggs laid from December to March.
- 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/
- Handbook of the Birds of the World Alive (retrieved October 2015 and July 2018)
- BirdForum Opus contributors. (2023) Grey-headed Imperial Pigeon. In: BirdForum, the forum for wild birds and birding. Retrieved 30 November 2023 from https://www.birdforum.net/opus/Grey-headed_Imperial_Pigeon