I am sending this message when I find my pictures on other sites, it always works:
Dear Sir, Madam
the photo on your page http://www.allforhunt.com/en/animal/mustela-eversmanii is my picture which you have stolen from internet, namely from http://www.treknature.com/viewphotos.php?l=3&p=125710 , despite the fact that the site states that there are copyrights on these pictures.
If you have not removed the picture within 10 days my lawyer will send you an invoice and will sue you.
20th September 2013
Dr Tom Conzemius