Unlabelled bird

In the walkthrough aviary.

It would be greatly appreciated if anyone could identify.

It should be a Red-collared Widowbird (Euplectes ardens) in breeding plumage. Difficult to see the size. Birds from the western and central African population is commonly all black while those from the southern and eastern distribution have orange red-red on throat.

Thanks

Widowbirds were among the birds I looked at on google as possibilities, couldn't find a match though.