Hi Pdafmill
A printout for a New Zealand birth registration of this era (1860's), will only give you the parents names (+ Mother's maiden name) ; the name, date and place of birth of the child. So, very limited information unfortunately.
(I can check to see where that 1861 birth was registered - before you go ahead and purchase a printout.)
Am I correct in thinking that it is information for his parents, that you are actually wanting ?
~ Lu