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If you read through to a linked article you'll find there is indeed long term health effects to the birds https://www.newscientist.com/article/mg22730341-600-bi
by jackgolding 9y ago
If you read through to a linked article you'll find there is indeed long term health effects to the birds https://www.newscientist.com/article/mg22730341-600-birds-love-of-cigarette-butts-in-nests-has-two-sides-for-chicks/ https://www.newscientist.com/article/mg22730341-600-birds-lo...
- undersuit 9y agoI never said there weren't. I specifically worded my comment to suggest that the benefits might outweigh the harm.
- anotherevan 9y agoFor instance, if the crows are picking up enough, then there will be less birds using them for nesting material, which is a more prolonged exposure.