Gulls

The Shorebird Guide – Used Book in Good Condition. View on Amazon
Gulls of Europe Asia and N America (Helm Identification Guides) – New; Mint Condition; Dispatch same day for order received before 12 noon; Guaranteed packaging; No quibbles returns. View on Amazon
Gulls, Second Edition: A Guide to Identification (T & AD Poyser) – Used Book in Good Condition. View on Amazon