A survey carried out in December 2013 identified the following bird species at The Glen:
Long-tailed tit Coal tit
Chaffinch Dunnock
Redwing Wood pigeon
Goldfinch Nuthatch
Wren Tree creeper
Blue tit Great tit
Crow Grey wagtail
Goldcrest Magpie
Blackbird Bullfinch
Song thrush Great spotted woodpecker
Robin House sparrow
During a second survey, on 17 December 2013, the following were seen:
Grey Wagtail 2
Wren 1
Dunnock 4
Robin 17
Blackbird 8
Song Thrush 2
Redwing 10
Mistle Thrush 2
Goldcrest 1
Long-tailed Tit 1
Blue Tit 5
Great Tit 7
Nuthatch 1
Treecreeper 1
Magpie 2
Carrion Crow 5
House Sparrow 10
Chaffinch 5
Bullfinch 1