Birds of Conservation Concern Red List
According to the RSPB, there are 67 species of British birds now on the Birds of Conservation Concern Red List, more than ever before. The Red List are those birds that need urgent conservation action if their falling populations are to survive our environmental emergency.
Almost a quarter of the 67 species have been seen in the park in the past seven years. Here is a list of them:
Cuckoo
Redwing
Grasshopper warbler
Marsh tit
Spotted flycatcher
Fieldfare
Lapwing
Skylark
Linnet
Mistle thrush
Grey wagtail
House sparrow
Starling
Tree sparrow
Song thrush
. . . . .
1 2 3
1. Song thrush; 2. Fieldfare; 3. Skylark
4 5 6
4. Marsh tit; 5. Cuckoo; 6. Redwing
Our park is increasingly important habitat at a time of crisis; it is an open woodland site for resident birds looking to nest as well as a safe green oasis for migrants to pause their journeys to rest and feed.
More about the park as a safe haven for endangered species:

Conservation status
21 birds were added to the list not 20
Thanks for the correction, Steve; I think I just took the RSPB’s word for it. It’s too many, no matter what the total.