My back garden is south facing, backs onto a field with a large lake and is surrounded by a 6ft high brick wall covered from top to bottom in ivy. It also has a large pond and many bushes that are supposed to attract bees and butterflies etc. Despite all this we hardly ever see any wildlife in the garden other than slugs and snails.
My wife is recovering quite well from a stroke and likes to sit near the window when watching the TV. My son suggested bringing in a Bird table to attract a few birds to the place. He bought us one of those wooden tables with a roof on it to keep the food dry.
We put it at the back of the garden and littered it with nuts and other things that birds are supposed to like. Within days we had dozens of birds flying in and it was a joy to watch. Sue (my wife) spent ages just watching them.
We have a pergola that runs the full length of the house so we popped down to Burford Garden Centre (which is a brilliant place) and bought 4 hanging squirrel proof bird feeders and hanged them up on the pergola the next day. The end result is that the garden is now full of birds and the squirrels have taken over the garden. We must see at least 6 different ones every day running everywhere and we are forever topping up the bird table because they have taken it over. The squirrels are forever running over the pergola and are only about 5ft away from the window, so Sue gets a close up view of them.
So if you want more wildlife in your garden, invest in a few birdfeeders. We are about to pop out again to buy some more.