You are so lucky having them nesting so close. We have some starlings under the tiles on the roof and some sparrows under the tiles on the neighbours garage. Had a great tit and a blue tit couple earlier but haven't seen them for a bit so have to expect the worst with suburbia and cats
We back onto a school and they have cut down all the big trees so our weeping pear is the only tree nearby now - all is not lost as have a great little woods only a block away but not the same as in your own garden.
Westi