It does look like we're heading for a situation that wildlife will only be found in reserves, and the rest of the environment is increasingly losing species and numbers.
The Countryside is becoming too efficient and tidy, stuble fields no longer happen. "Spilt grain", so often talked about in older bird books, doesn't exist. Barns are being developed and are no longer bird friendly. Rural villages are being suburbanised, with tarmac drives and manicured lawns.. all nice n neat n tidy.... the list goes on!
The majority of the common birds that are doing well are those which can adapt to feeding from bird feeders (nothing wrong with feeding the birds!) those which need to forage for 'wild' food are suffering.