Prytherch, R.J. 2009. The social behaviour of the common buzzard. British Birds 102: 247-273.
Prytherch, R.J. (in press). Breeding Biology of the Common Buzzard in Avon. British Birds 106: xxx-xxx.
Prytherch R.J. and Roberts, L.R. (in press). Dispersal of Common Buzzards from North Somerset. Bristol Orn. 31: xxx-xxx.
Submitted on behalf of Mr RJ Prytherch.
All costs are borne by Mr Prytherch, amounting to approx. £380 (~E440) in petrol per year.