Where does “αγιοπούλι” come from?

αγιοπούλι (Greek) comes from Greek πουλί, from Byzantine Greek πουλλίν, from Koine Greek πουλλίον, from Latin pullus, from Proto-Indo-European polHwós, from Proto-Indo-European pelH- — pale, gray.

αγιοπούλι (Greek): rosy starling, rose-coloured starling, "Pastor...