A great way of providing nesting opportunities for swallows. Ideally mount the bowl under eaves, leaving enough space for the swallows to enter, on the sheltered side of a building. Ensure there is an adequate drop (at least 2 - 3 metres) beneath the bowl for the swallows.
For tips on making your nest box a success, see our blog on Five FAQs About Attracting Birds to Your Nest Box.