Riddle G S 1979

‘The Kestrel in Ayrshire 1970-78’,  Scot Birds 10 : 201-15

Riddle G S 1985

‘Kestrels attending oil installations in the North Sea’, North Sea Bird Club Report for 1985  pp 63-70

Riddle G S 1986

‘The Kestrel on Arran’,   The Arran Naturalist 9 : 4-12

Riddle G S 1987

‘Variation in breeding output of Kestrel pairs in Ayrshire 1978-85’

Scot Birds 14 : 138-45

Riddle G S 1990

‘The Kestrel’,  Shire Natural History series

Riddle G S 1991

‘Seasons with the Kestrel’,  Blandford Cassell

Riddle G S 1993

‘Long term monitoring of a Kestrel population in Ayrshire’,  Proceedings of the 1991 Hawk and Owl Trust Conference pp 2-4

Riddle G S 1993

‘A 20 year study of the Kestrels in Ayrshire’,  Research Progress Report, Scot Birds 17 : 9-13

Riddle G S &

Sheppard G 1999

‘Large Kestrel clutch sizes in South West Scotland 1997-98

Scot Birds 20 : p 43

The Kestrel section of the Birds of Scotland Vol 1 pp 493 - 496.

Shaw G

&

Riddle G S 2003

‘Comparative Responses of the Barn Owl (Tyto alba) and Kestrel (Falco tinnunculus) to vole cycles in South West Scotland’.   Birds of Prey in a Changing Environment edited by D B A Thompson et al.

Scottish Natural Heritage pp 131-136.