I have my own hunch about the need to hide his BC. It’s not because he wasn’t born in Hawaii. It’s not because his father was a British subject. I think it’s because the BC specifically lists his citizenship as foreign. His father was Kenyan and a British subject so he probably could have requested that his son be listed that way. We already know you don’t have to be born in Hawaii or a citizen to get a BC there.
The long-form Hawaiian birth certificate doesn't list the child's citizenship.
There is no place on the 1961 Hawaiian Certificate of Live Birth for "citizenship", not even of the parents. There is for their birthplace, as well as that of the baby. There's a space for the parent occupations, although mother's and father's are worded a bit differently (it was 1961 you know, or thereabouts). There is also a file number, which should be the same number that is shown on a Certification of Live Birth, the short form. However the number on Barry's certificate is actually 3 numbers higher than that of the younger Nordyke twin. The Nordyke twins were born about 19 hours *after* Barry, supposedly in the same hospital, although no one seems to know that for certain since the COLB doesn't show the hospital name as the Certificate does. Their Certificates show that they were filed three days *after* Barry's COLB indicates his was, so you'd expect his number to be several 10s lower than theirs, not 3 higher. (His posted COLB shows him being born a bit after 7 PM on a Friday night, the twins were born a bit after 4 PM the following day.