When the vines grow there is extra protection for the birds from the sun and the wind, and it gives them a little bit more privacy. The best time to put the houses up is in midwinter for the Southern part of North America, and in the early Spring in the Northern part of the country. Sometimes it takes a while for the birds to find your house, so be patient if it isn't immediately occupied. When you pick a spot for any birdhouse or feeder or birdbath, you should always consider the birds' safety. If it does, you should be sure to have poles which are high enough to keep cats and raccoons away from the babies.
Predatory guards are available at wild bird supply stores.
This birdhouse is perched on top of a tall rose bush arbor. The birds love it. There are many different kinds of birdhouses available to attract different kinds of birds. I'd like to show you a few.