Birds are using cigarette butts in their nests, but this might not be a bad thing. Some say that the nicotine acts as a toxin to keep parasites at bay, producing a healthier and happier nest.
Image by Victor Argaez.
Urban Planet is a roundup of blogs from around the world dealing specifically with urban environments. We’ll be on the lookout for websites outside the country that approach themes related to urban experiences and issues.