The Barn Swallow is the most abundant and widely distributed swallow in the world. These acrobatic flyers consume large numbers of insects, including agricultural and garden pests. For this reason, attracting Barn Swallows to your property may be one more positive step in an integrated pest management strategy.
Links
[1] https://extension.umd.edu/sites/extension.umd.edu/files/_docs/programs/woodland-steward/FS798_WMgtBarnSwallow.pdf
[2] https://extension.umd.edu/tags/swallow
[3] https://extension.umd.edu/tags/barn-swallow
[4] https://extension.umd.edu/tags/birds
[5] https://extension.umd.edu/tags/attracting-wildlife
[6] https://extension.umd.edu/tags/wildlife-management
[7] https://extension.umd.edu/woodland