''I'm really pleased. I'm going to have someone to drive me around the shows when I'm in my Zimmer frame,'' the Oamaru Poultry, Pigeon and Canary Society president said.
Serena is as passionate about poultry as her father, who shows old English game bantams, and has grown up helping care for various poultry breeds.
She has already garnered a wealth of experience showing birds despite her young age, by joining forces with her brother Sean (15) and twin sister Laura to enter past events.
This year, she ventured out on her own and with one last show of the season - the Oamaru Poultry, Pigeon and Canary Society show which begins on Friday - she is already the proud recipient of an array of ribbons and certificates.
She exhibited in the Dunedin, Nelson, Taieri and Waimate shows, and the Ashburton show, which incorporated the New Zealand National Championship Show.
She won best junior fancy bantam at Waimate and in Dunedin but went one step better at the Taieri show, winning best junior bantam (over all other bantams).
There were no junior events at the national show but she won best Wyandotte any other colour with her blue partridge Wyandotte.
Serena said she preferred Wyandotte bantams ''because they don't fight as much as the others''.
''They're a lot easier for little hands to look after,'' Mr O'Brien said.
Serena is also honing her skills as poultry judge, learning on the job as she stewards for her father.
The best learning experience for new judges was to steward for experienced judges and to ''read the book'', Mr O'Brien said.
Serena glances across the kitchen to a heavy tome which is the New Zealand Poultry Standards - her homework. She lists off the all-important benchmarks - a bird's shape and conformation, its stance, colour and condition.
But keeping poultry was not just about the excitement of showing, Serena said.
''You've got to look after them all year.''
Already looking ahead to future shows, Serena said she planned to change her focus from the bantam spangles class to Sussex and Plymouth Barred Rock bantams.
And this was only the beginning as she was absolutely sure this was one interest which would last a lifetime, she said.
Next month, she will gather some Australian experience as she and her family are travelling to the Royal Queensland Show in BrisbaneMr O'Brien will be judging water fowl in the poultry section.
It is the first time he has judged overseas.
Two New Zealand poultry judges had been invited, Mr O'Brien said.
Judging overseas was a chance to ''build up relationships, share knowledge and exchange ideas'', he said.
The Oamaru Poultry, Pigeon and Canary Society Show is on Friday, July 26, and Saturday, July 27, at the Drill Hall, Itchen St, Oamaru.
It is the last poultry show for the season.
Next year, the national show will be in the North Island and it will return to Oamaru in 2015.