I'm a bit better with the odd trivia so you'll have to help out with the basics! LOL
I was thinking about this roosting box and I suspect it might also be used in the tropics where they have torrential downpours and loss of habitat. (Normally the birds would shelter in dense tree canopies - at least I would think - but if it that's not available a roosting box would come in handy to keep them from being knocked about, soaked, & drowned.)