I'm not sure,to be honest, but looking at other photos I believe so. Either adult or very nearly so, anyway.
Somehow, this was far stranger than seeing Proboscis Monkeys, say - rather than a brand new weird animal it was a weird version of a very familiar one. Rather odd.
For some time certain zoos' patagonum were ISIS-listed as salinicola (Twycross' maras were, for instance). Safe to say once you've seen real salinicola you wouldn't mix them up...
I have to agree - they don't look like Mara at all. Then again, they don't look much like anything else either - but you can certainly see faint Mara similarities.
The shape of the head and ears are very like (a slightly dinkier version of) the Patagonian Mara - the body much more agouti-like. It's almost a rabbit to the Patagonian''s hare.
What a beauty! I knew they had them when I visited, per Zootierliste, but missed it as I wasn't looking for anything quite so small or sharing an aviary with a Tragopan -I spent a lot of time scanning the paddocks though.
I've got a photo of the Tragopan, so I was "that" close, grrr! Better luck next time I hope.
According to zootierliste they have bred this year in Berlin Tierpark and Ebbs Zoo in Austria. Prague has them off show too. If they turn out to be as prolific as their larger relatives there should be many more of them around Europe in the coming years.