I messaged the park and asked them about your photo, according to them that picture is of a Pygmy falcon (Polihierax semitorquatus) but that must be incorrect?
@Great Argus Yeah exactly, it's definitely not a pygmy falcon at least. Are we sure it's a Collared falconet though? Black-thighed falconet (Microhierax fringillarius) is also very similar.
I hope they get put on-show anyway, I don't have photos of either Black-thighed or Collared falconets yet!