A/N- So, wrote this real quick because of thoughts on Tumblr :). Basically, we all are convinced Newts Patronus is a Porcupine, in reference to Tina. His love. Though, this second idea(matching Thunderbirds) served this ficlet better so I chose to do this! Enjoy, and please feel free to drop requests :). I got two I am working on, but still open to them!
Newt was a half a second from dropping his focus. When it took shape he almost lost concentration.
Several times, he had been able to do a non-corporeal Patronus. A weaker, shield-like sheet of light. This time was not meant to be different. But as it seemed, fate decided to have some sort of pity on him. When the light left his wand, it took the shape of a Thunderbird.
But it did its job well. Tenaciously pushing back the leithfold.
"Expecto Patronum!"
Another Thunderbird Patronus few to life, circling the lethifold with his. Newt only dared to drop his concentration to spare a glance to his left. Tina's brown eyes connected to his, and he almost cried with delight at the happiness in them, a smile that touched her eyes. Something he had been desperately trying to see since they reunited.
Their Patronus seemed to fall into step easily, pushing the black smoke-like entity back from the street. Together, Newt moved forward beside Tina while the lethifold retreated to a rooftop.
Things between them were still confusing. But there was no question how they felt now. And that was enough, for now.