Hiding at the fringes and burying one's nose in a book may work on most people with a sense of human social cues. It doesn't deter certain other people, however. There's a small thump and a scratching on the tabletop as a small crow alights there. He ducks his head forward, peering at her face, at her plate, at the open book beside it.

"Greetings, featherless!" Okay and he talks, in just the sort of excitable croaking voice one might expect.