I feel it's more humanization than animalization, as it's kinda implied that they're actual birds toward the end. Drama seems fitting to me, it goes dark on the exposition, but things stays kinda implied.
Mfw the omnis around me come across something controversial and you can literally hear the gears in their heads turning trying to rationalize the horror that is animal agriculture
This is the most depressing love story between a Chicken and a Raven (I'm pretty sure she's a Raven, Crows are gang birds) I've seen in my life... Not that I've seen many of them.