t the peak of lockdown the endless clamour of the human world temporarily ceased - countless industries paused operations, non-essential shops closed their shutters, roads fell almost silent.
Those people who were able to venture outside their homes, either to take their government-sanctioned daily exercise, or to travel to key jobs, experienced a very different world, and one which as many noted at the time, was full of birdsong.
A new study now indicates it was not just the sudden drop in noise pollution which suddenly allowed us to hear the birds.
