"
The improvised insect repellent came with a cost. In 2014
another study was done to see what affect the presence of cigarette butts does to the chicks of the finch. The results were predictable.
"We found that hatching and fledging success and chick immune response were all positively correlated to the proportion of the nest that was made up of butts. However, the signs of genotoxicity in the blood cells also increased with the proportion of butt cellulose in the nests."..."
