Sometimes you can learn from Twitter (assuming you trust your Twitter source, which seems decently legit).
The words ROOK, CROW, JAY and RAVEN are all supposed to have originally been onomatopoeic, and derive in some way from words imitating the birds’ calls. pic.twitter.com/nWtPtbf5sP
— Haggard Hawks ???????? (@HaggardHawks) September 15, 2019