Please note that I am not involved with or associated with, any law making authority or regulatory body. These are my personal views, backed by the info that is available.
My interests in RPAS were also purely for recreational purposes and like you the idea was to do aerial photography. No buildings or structures, purely wildlife...
The minute any form of income is generated by any form of RPAS use...the rules change.
If you are going to photograph your own game on your own farm with your own equipment and you are not going to sell the photos and you are not overstepping any other regulations, then no-one can stop you and I will be one of those joining you.
I am just participating on RPAS related issues here on Avcom to spread awareness of the consequences of people's actions. I would hate to hear that you or any other person was "made an example of" as so many on here would like to see happen, just because you wanted to use your toys for your own fun, but overstepped some stupid rule or managed to p i ss off the wrong person...
Good luck with your venture.