Flight Of Fancy will miss the Meon Valley Stud Fillies` Mile at Ascot today.
A vet`s certificate has been produced for the two-year-old, who would have been one of the leading fancies for the Group One contest following an impressive victory at Salisbury last time.
A spokeswoman for trainer Sir Michael Stoute said: 'She just had a slight temperature.'
Owned by The Queen, Flight Of Fancy earned a quote of 16-1 from Coral for the Vodafone Oaks following her Salisbury success.