Birds Have Figured Out That Cigarettes Are Good for Them — Manuela Hoelterhoff Researchers have known for years that some birds use discarded cigarette butts to build nests. A new study has compiled evidence to show what’s behind this behavior: the butts keep parasites at bay.

Researchers have known for years that some birds use discarded cigarette butts to build nests. A new study has compiled evidence to show what’s behind this behavior: the butts keep parasites at bay. #birds #parasites #ornithology #birdparasites #UniversityofLodz #bluetit #animalbehaviour