The Diederik cuckoo parasitizes several weaver (especially the Village Weaver) and bishop species. Note the completely barred underwing in flight (upper, Rubondo, 2nd row left, Kitulo NP, both courtesy of Paul Oliver) and the red eye in the male, brown eye in the female. The 2nd row photo (Arusha) is courtesy of Frank Priscus Shirima; the 3rd row right photo is of a juvenile (Lengijavi). The left 4th row immature was at Nanja Dam; the right 4th row, Engikaret, courtesy of Per Holmen. The left lower bird (courtesy of Owen Evans) was trapped and died in the tubular entrance of a weaver's nest. The right lower adult male was seen at Shambarai; click it to see 20 enlargements.