[Rob T]

Jane thats a wonderfull piece of film, the more I watch deer the more odd things they seem to do.
Im no expert but have spent many hours waiting for and watching them, I have seen a young fallow doze off whilst standing for a split second and over compensate on wakening threw her head back up so hard her feet came off the ground, maybe yours was falling to the left before she realised.
Would also account for the startled look on her face.
Bet your pleased you had your camera with you. Well done.

Regards

Rob