Figures reveal notable increases in the population of sparrow hawk, collared dove, green woodpecker, great spotted woodpecker, blackcap, chiffchaff, chaffinch, goldfinch and long-tailed tit.
The study also reveals a dramatic decline in a number of species including the tree sparrow, song thrush, grasshopper warbler, spotted flycatcher, willow tit, linnet, lesser redpoll and lesser spotted woodpecker. The decline of these birds reflects their reduction in populations across Britain in the past few decades.
Bird ringing takes a lot of dedication as early morning pre-dawn starts are the norm to prepare the nets. Dr Chris Thorne, the club’s Secretary, was one of the inaugural members 50 years ago.