Why birds and birders don't do drugs

One of my alert friends sent me an essay from the October 5 Guardian Unlimited:

It can conjure up a mood for sex, and might just curb the need for drugs

Therapy at Liverpool hospitals includes a joyous dose of birdsong. Better still, wards should be moved to the aviary

Patients at Liverpool hospitals are to be given doses of birdsong to aid their recovery. Though doctors are uncertain of the effect, they believe that a blast of the dawn chorus is a good medicine.

Read the full story here.