My best guess on spritzee is either Fairy/Ghost or Fairy Poison, because the "beak" on spritzee is actually a death mask, which doctors used to use to try and avoid catching diseases from patients.
In addition, it learns Aromatherapy. Plague doctors actually used crushed up petals from posies to lessen the awful stench that was present everywhere due to the decaying bodies and presumably the puss from the sores that were popped didn't exactly smell great. Aromatherapy also works in other ways,as the obvious connotation that the doctor heals [or tries to, as plague doctors had high mortality rates for obvious reasons]
The changed form of the 'Ring around the Rosie' [or whatever you call it] nursery rhyme says
Husha instead of
ashes, and its Japanese name is
Shushup, which is very similar to
Husha. That nursery rhyme is all about the Black Plague, if you were unaware -
a pocket full of posies? The commoners used the flowers for the same reason the doctors did.
Ashes, ashes, we all fall down - does that require explanation?
Can't think of why it'd be faerie, though. Maybe just for a boost in the perfume motif.
Either way, Spritzee's flavour is deliciously intriguing and dark, and I truly hope its evolved form does it justice.
E: Totally undermines the srs bsns, but I figured it might be worthy of posting - it being a bird/having really strange proportions might just also have something to do with a popular treatment for the plague being to cut a chicken in half and then rub its ass on the buboes, iirc.
Or it could just be because everything OmG ADORABL!!11*~*~* must be all head and no body whatsoever. I'unno.