Study of biology at York University (Canada) it showed that the consumption of antidepressants affects the desire of starlings to sing "wedding" songs.
Experiments have shown that starlings are less sing those females that are received in a diluted form fluoxetine (better known under the trade name "Prozac"). Scientists gave birds the same amount of antidepressant that starlings could get in nature through worms and larvae found in treatment plants.
Were observed another strange effect: males are more hostile to females who received the antidepressant. Instead of courting, they sometimes just attacked females. Researchers suggest that the consumption of antidepressants makes birds more sluggish and less attractive to partners. Earlier studies have shown that fluoxetine reduces sexual activity in female rats.
As you know, drugs are partially excreted from the body naturally and fall into the waste water. Scientists call for improved methods of removing chemical contaminants from the sewage, because, as it turned out, the drugs affect the mating behavior of birds. Since the 1970s, the number of starlings in the UK has decreased by 66%.