Research shows some birds use cigarette butts in nests to reduce parasites, though potential health risks remain.
It seems that by lacing their nests with cigarette butts, several species of birds have learned to keep pests and parasites away.
City birds are using cigarette butts in their nests to reduce parasites, but the toxic tradeoff may come with hidden risks ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results