As a keen natralist and avid birder, of seventy years, I have witnessed first hand the early signs of the  "Sixth Extinction" in my own county of Hampshire in Southern England. No longer do I hear the Cuckoo or the  Yellowhammer, or the Chaffinch in the woodland, or see the Swallows, Martins and swifts streaming around the rooftops in seasons that used to occur at regular times of the year. I no longer see Red squirrel dancing in the trees, the Rabbit playing in the fields, the Hedgehog snuffling on the lawn, all gone in less than my liftime. This is not something that I read in books or saw on the television, I have seen all of this with my own eyes In what can be considered three generations and it's heartbreaking. Very little is being done as this trend seems to be accelerating and it maybe too late for reversal.