Home
Black-headed Gull
Gulls
Ringtypes
CES
RAS
SOVON
Links
Contact
Introduction
Winter guests
Breeding birds
Sexratio
Survival
Moulting head
Defects in colouring
Influenza research
Articles
Interesting life histories
Introduction
Ooijse Graaf
Wylerberg
Vlieland
Introduction
Ruddy Shelduck
Swallow
House Sparrow
Little Ringed Plover
Black-headed Gull
Mandarin Duck
Common Coot
Egyptian Goose
Sand Martin
Black Swan
Introduction
Ringed Plover and Kentish Plover
Black-tailed Godwit
Avocet
Blackbird
Northern wheatear
Other ring research
Introduction
European ringtypes
Colourcodes Black-headed gull and Common gull
Black-headed gull
Common gull
Herring Gull
Lesser Black-backed Gull
Mediterranean Gull
Yellow legged-gull
CODES E-SERIE - Introduction
Comming soon...
© Frank Majoor. Website update 10-09-2013.
E-mail: