Populations of wild birds in the UK, 1970 to 2021

125 Index (1970 = 100)

Confidence interval

100

75

50

25

0

1970

1980

1990

2000

2010

2020

125 Index (1970 = 100)

Confidence interval

100

75

50

25

0

1970

1980

1990

2000

2010

2020

Guardian graphic. Source: British Trust for Ornithology (BTO), Royal Society for the Protection of Birds (RSPB), and the Joint Nature Conservation Committee (JNCC)