Did a quick search and don't think anyone has picked up on this yet but it seems like the 2020 film adaptation of Mulan will have a shapeshifting witch in it. Gong Li plays the witch and in the latest trailer we have a really, really quick peek at her morphing from woman to bird. Transformation at around 1:50.
https://www.youtube.com/watch?v=H3PR1v_5cfc