Since March, the box is on the ground floor on a windowsill. There is always a hive of activity, because several of the residents feed, Meisen all kinds come to some of the windows. And now, since early April have two great tits started to relate the cave, now the female incubates and is supplied by her partner with food. I am happy. Even if you have no garden, you can ensure that nesting for the small Zwitscherlinge exist.