WONDERING why you don't hear so many birds singing in Worcester these days?

Well, anti-depressants flushed down the toilet could be making male birds less likely to sing during mating, a new study has found.

The University of York discovered that male starlings sing less to females who have been fed diluted concentrations of fluoxetine, which is sold as Prozac.

The research focused on birds who ate worms at sewage treatment plants which were found to contain traces of many different drugs.