(Cuculidae; Ϯ Eastern Koel E. orientalis) Gr. ευ eu  fine; δυναμις dunamis  power, strength (cf. ευδυναμος eudunamos  mighty); "Genus. EUDYNAMYS Ϯ.   Rostrum crassum, subelongatum, culmine rotundato, a basi arcuato, lateribus subcompressis; mandibula superiore apice subemarginata, inferiore gonyde ascendente conspicua; naribus subgrandibus, patulis, ovalibus, suboblique positis, supra membrana partim tectis.  Alæ subbreves, rotundatæ; remigibus tertia quarta et quinta fere æqualibus longissimis, prima brevi undecimæ æquali; pogoniis integris.  Pedes robusti, nudi; acrotarsiis ad latus externum compressissimis, in scuta quatuor grandia divisis; paratarsiis in medio compressis, in scutula plurima divisis.  Cauda elongata, patula, rotundata.   The true Cuckoos, or that portion of the present family of Cuculidæ which constitutes the genus Cuculus, Auct., is distinguished from the remaining groups of the family by the comparative weakness of the bill  ... and the feebleness of the legs and toes  ... The group which we have just characterized deviates from these characters, which may be considered typical in the family, by the greater strength of all these members. The bill is powerful, the under mandible more particularly, which is marked by a strongly ascending gonys.  ... The tarsi and feet are particularly strong: the former are much compressed on the external side, exhibiting by this conformation a nearly flattened surface in front. The wings also are much rounded, and comparatively shorter than in the typical Cuckoos.  ...   The species of this genus seem very widely distributed over the East. The Cuculus punctatus, Linn., the Coucou tacheté des Indes Orientales (Pl. Enlum. 771.), appears to be referable  to this group.   1. ORIENTALIS.  Eud. metallice niger, rostro flavescente.  Cuculus orientalis. Linn. i. 168. no. 2.  Coucou des Indes Orientales. Pl. Enl. 274. f. 1.  Eastern black Cuckoo. Lath. Gen. Hist. iii. p. 282. no. 26.  ...  Cuculus Mindanensis. Linn. i. 169. no. 3.  Coucou tacheté de Mindanao. Pl. Enl. 277.  Mindanao Cuckoo. Lath. Gen. Hist. iii. p. 283. no. 27.   ...  The native name of the male is Cowhat'; of the female, Belinging.   2. FLINDERSII. Lath. MSS.   ...   Ϯ Eυ bene, and δυναμις potentia." (Vigors & Horsfield 1827); "Eudynamys Vigors and Horsfield, Trans. Linn. Soc. London, 15, pt. 1, 1826, p. 303. Type, by subsequent designation, Cuculus orientalis Linné. (Gray, List Gen. Bds., 1840, p. 57.)" (Peters 1940, IV, 36).  
Var. Eudinamys, Eudynamis, Endynamys, Dynamene.

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Recommended citation
Jobling, J. A. (2018). Key to Scientific Names in Ornithology. In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.) (2018). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from on 17 December 2018).