A secret of birds & bone
Kiran Millwood Hargrave2020

Sofia lives outside the city of Siena with her mamma, little brother Ermin, and their pet crow Corvith. Her mother is a bone-builder, famous for her keepsakes and charms.
But ever since an unexpected visit from a silver-veiled stranger, Mamma has not been herself. She no longer takes pleasure in her work, nor will she let Sofia help her.
When Mamma is arrested on Sofia's birthday, the children are taken to the city orphanage. It's there that Sofia decides she is no longer a helpless child. Clutching her mma's gift, an intricate bone locket, she sets out to unravel the secrets that bind her family to Siena itself : its catacombs and towers, its birds and rivers, its rulers and people.

Titre original : A secret of birds & bone (2020)