Probably. Might depend on any wind, slant of rain, or how big your window is(both height of bottom of opening and you don't really want edges and inside of window exposed to rain either).Shouldn't a roof with a 1' gable and eave overhang keep the rain from getting in the windows? I'll do it if it's in the best interests of my birds because of my weather situation, but if the other kind is fine I'd prefer that I think. That kind held open with a stick has always looked ramshackle to me. Just a personal preference though. No offense to anyone who likes the look of that style.
Is it @blackdog043 that has some pretty spiffy window props?
I just stick a length of 1x3 for props, then cleat them shut in winter,
but my whole place is pretty ramshackle(a purposeful aesthetic in my case
