Yes could be delicata, but i would suggest guichenoti because of the greyish back contrasting with the copper-coloured head, the abundant large pale flecks that seem more like the slightly larger flecks on guichenoti and in the 2nd picture you can see it has a broad dark mid vertebral stripe (admittedly not as dark as is typical). Very like the second photo on page 149 of Coventry and Robertson.