The brick owner of the Pentax K-01 and some other Pentax gear, decided and got a Canon 7D and an "outdated" Canon 400/5.6L USM lens to do the job:-
http://steevemarcoux2.com/2013/03/08/from-pentax-to-canon-7d-400mm5-6-l-for-wildlife/
Nice photo, btw!
Read Also:-
The Pentax Big Guns for Birding!