Purple Martins Rely on Human ‘Landlords’ to Provide Nest Boxes Each Spring. Can That Dynamic Last?
/https://tf-cmsv2-smithsonianmag-media.s3.amazonaws.com/filer_public/54/df/54df3d5c-423f-4cc2-be68-420b70b82639/header-purple-martins.jpg)
Latest articles | smithsonianmag.com...
The large swallows have nested alongside human settlements for centuries. Now, the birds’ breeding success depends on caretakers who are beginning to age out of the role