You should never keep marabou in pairs, keeping them in large groups reduces/dilutes aggression. Plus that single pairs seldom breed. If you want an idea of such an aviary:
I take it the 15ft would be the height of the exhibit?
Curiousity continuing here. Would it be better to have more of the vultures as well? I assume the secretary birds would be best kept in pairs.
More vultures means more chances to form pairs, and with colonial vultures they can usually stay together after pair-formation. If there are issues non-compatible pairs can always be separated.
So both the vultures and marabou storks would be groups with equal male:female distribution? Or would I want more of one sex over the other?
More of one sex or the other is usually not an issue (especially in larger groups), but equal ratio’s should render the most pairs. I would also avoid having a sex with only one individual or a very heavy excess of one sex. My advice is to put in at least 3.3 marabou and 2.2 vultures.
There was an incident a few years ago at Memphis in which a Madagascar tree boa bit a radiated tortoise in the head in front of a bunch of zoo visitors and it created a fair amount of negative buzz. So there's that.
A. madagascariensis (the Northern ground boa) has been kept for many years now with radiated tortoise in Antwerp zoo. However, turtles and snakes is often regarded as a high disease-risk (I don’t know the specifics) by reptile-keepers and thus not recommended.
Walruses have been observed sucking seal brains out through their skulls, so no.
It’s certainly possible, Hamburg has done it for many years (fur seals and grey seals). However, the fur seals were really annoying the walrus (biting in it’s tail) when I was there.
Primates and ungulates are mixed frequently. The first should be no different. However, I’m not 100% sure on the temperaments of either the porcupines of bustards.
