Inleiding Flevoland De Deelen Ooijpolder Scheelhoek Waterland
Nederlands

12 years neckcollars
of Greylag Geese
in the Netherlands

Ooijpolder, Gelderland

To Sovon
 

Sexing a Greylag goose by cloacal examination
All birds are sexed by cloacal examination.
(Foto: Harvey van Diek)

The Ooijpolder is a different story. The birds ringed at this site are rarely seen at a distance of five kilometer from the ringing site. Adult birds are very site faithful to their breeding area. Most of the year they stay within two kilometers of the ringing site. The young birds and especially the second year old birds are sometimes seen outside the area. This happens mainly after the moulting period. Observations originate upstream along the river Rhine and Waal even into Germany, around the Noorderplassen, in the Lauwersmeer and further away in the neighbourhood of Hannover, Germany.
 
Number of observations per area per month of Greylag geese ringed in Waterland (for each individual only one observation per month)
Area - Country / Month
Jan 
Feb 
Mar 
Apr 
May 
Jun 
Jul 
Aug 
Sep 
Okt 
Nov 
Dec 
Gelderland
64 
57 
56
55
55 
75 
97 
94
95 
89 
82 
82 
rest Netherlands
Germany

 
Distribution of observations of neck-collared Greylag Geese from the Ooijpolder over diferent areas during the seasons of 1997-99.

 
Distribution over the Netherlands of Greylags ringed in the Ooijpolder.
The size of the dot refers to the number of sightings per location.

 
Distribution over Europe of Greylag Geese ringed in the Ooijpolder.
Per location, one dot only.
 

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Inleiding Flevoland De Deelen Ooijpolder Scheelhoek Waterland