30 SUMMARY The following are probably some of the reasons for the increase and decrease of status. These are only speculations:- (a) Provision of conservation areas. Reserves. (b) Provision of new habitats - motorways. (c) Toxic chemicals, herbicides, etc. (d) Destruction of habitat - lack of coppicing - removal of hedgerows and woodland. (e) Management of present hedgerows. (f) Climate - it is possible that birds such as Redstart and Nightingale are at the extreme of their range. Pl. T. PARKER ---oOo---