Thank you all for welcome,pretty sure it is splayed legs as it looks like the ones in photos,but the bottem of the nest box is smoth so I put some rolled oats in there but mum keeps throwing everthing out from near the babies.I will post some pics of baby in couple of days as just been down to Doctors and had to have an ingrown toe nail removed so am off my feet for a couple of days and can't get out to take pics.
thanks again Linda