Please help! What is my bunny sick with?

by Rosie

Help anyone please

All day our one year old female dwarf has been jerking her head forwards and back as if she is suffering from severe hiccups. She's curled up in the back of her cage with her fur puffed out around her, and when I lifted her up I noticed she was making a loud and constant "click click click" noise with her teeth.

Her ears are also quite warm, but her behaviour seems relatively normal (still eating, cleaning herself, and occasionally moving about her cage).

None of her symptoms seem consistent with rabbit illnesses I'm finding online. Please help us diagnose her!