During the breeding season from April to August in 2015, one case of White-bellied Redstart (Hodgsonius phaenicuroides) parasitized by Large Hawk-cuckoo (Cuculus sparverioides) was observed in Kuankuoshui National Nature Reserve, Guizhou, southwestern of China, and the cuckoo parasitism rate was 1/16 (n = 16). The parasitized nest, with one white Cuckoo′s egg and two Redstart′s eggs (Fig. 1), was found to be deserted by the redstart host. The Large Hawk-cuckoo egg was 6.09 g in weight and 27.73 mm × 20.20 mm in size, and two host eggs were 2.34 g and 2.40 g in weight and 20.05 mm × 14.94 mm and 19.95 mm × 15.09 mm in size, they were much different in egg mass and egg size (Table 1). Egg measurements by spectrophotometer showed that they were much difference in spectrogram. The Large Hawk-cuckoo egg was a typical non-mimetic parasitic egg because of its egg chroma and hude were much lower than those of White-bellied Redstart, however, higher in brilliance (Fig. 2).