Backwards fledgling...

hoping this is the right place to ask! I am currently looking after a fledgling blue tit and shes had a tumble or two and been played with by cats. Shes in good condition, possibility of a slightly damaged wing but can't be sure until her feathers grow in. The thing I'm worried about is... Is it normal for them to be walking backwards most of the time? She will go in a couple circles backwards at a time and just hop back wards. Rarely forwards, is it something to be concerned about?