tags: Irania, White-throated Robin, Irania gutturalis, birds, mystery bird, bird ID quiz [Mystery bird] Irania, also known as the White-throated Robin, Irania gutturalis, photographed at Nyumba ya Mungu Reservoir, Tanzania, Africa. [I will identify this bird for you in 48 hours] Image: Dan Logen, 14 January 2010 [larger view]. Nikon D300, 600 mm VR lens. ISO 500 1/400 sec, f/6.3. Please name at least one field mark that supports your identification. Review all mystery birds to date.