I've been wanting to build an aviary for a while and was wondering the dimensions that would be required for three pairs of zebra finches, a pair or two of budgies, possibly a cockatiel, a pair of society finches(possibly), maybe a pair of spice finches or any recommended species. I would be building a small shed too for winter with a lamp or something... Recommendations for cold hardy birds? here in eastern wa it gets in the negative teens! Would the selection of birds I want do ok? I've heard of people's zebras and budgies doing fine at ten degrees (farenheit)! One more thing... I hand raised a sparrow and named him jack, he lives with my budgie . He was perfectly tame... Until he found out how to fly!!! Him and my budgie have free roam time in my room daily and I was wondering how I could tame him?