Urban house finches (Carpodacus mexicanus) seem to harness the toxic chemicals in cigarette butts to drive out nest parasites.
Urban house finches incorporate more fibres from cigarette butts into their nests if they have live ticks in them, suggesting the toxic chemicals in the butts may deter the parasites
Not exact matches
Red and yellow male
house finches eat at a bird feeder in an
urban Phoenix backyard.