Download the RSPB's song, Let Nature Sing
It says that Britain has lost 40 million birds in the last 50 years and 56% of wildlife species in the UK are in decline.
Only 15% of people in the UK thought nature was in crisis
Young people were also unaware of the crisis facing Britain’s birds.
One in three 13 to 17-year-olds didn’t know that the UK had lost so many birds over the past 50 years.
But over a third of the 505 teenagers surveyed said they wanted to do something to save nature, when they heard what had happened.
So the RSPB has released "Let Nature Sing"
So to raise awareness of Britain’s declining bird numbers, the RSPB has released a song called “Let Nature Sing” with 25 different threatened and endangered UK birds.
The track has birds found across all four countries and a range of habitats – the blackbird, and robin, the great spotted woodpecker and grasshopper warbler, the crane, the great tit, the sedge warbler and the bittern, to name a few.