εὐχειρία
From LSJ
ξυνῆλθεν ἀτταγᾶς τε καὶ νουμήνιος → birds of a feather flock together, the francolin and the new-moon bird get together
English (LSJ)
Ion. -ιη, ἡ,
A manual dexterity, skill, ἀνόητος εὐ. Hp.Art. 35, cf. Ruf. ap. Orib.inc.20.1; in flute-playing, Poll.4.72; in battle, Plb.11.13.3, 16.19.1, Fr.158 (pl.), Hdn.1.17.12, etc. (Sts. confused in codd with εὐχέρεια.)