Eagle72 - Colour Ring Project

History

17 of June 1994 is a very special day in the history of Eagle72. It was then the first golden eagle, in a nest in the middle of Sweden, were marked with colour rings. The juvenile bird, that had a weight of 3.55 kilos, got a metal (white) ring on the right leg and a red over blue ring on the left. The markers were Alf Nordin and Gunnar Lind

ringmärkning-5.jpg (15647 bytes)

ringmärkning-4.jpg (9143 bytes)

ringmärkning-4.jpg (9143 bytes)

ringmärkning-1.jpg (8759 bytes)

The eagle got the name Biggles, but unfortunately it was killed by a power line 5 February 1995. Sad and true, but the Colour Ring Project had started. 

A young Golden Eagle in the nest
Biggles 

Marking system

The marking system is similar to that for the white-tailed eagle.

The right foot is marked with an one-colour ring telling the area.
The six different areas are:

The left foot is marked with a two-colour ring to tell the marking year (age).
The colour combination is the same as Project White-tailed eagle and is read (for example) red over orange (see picture). An un-colour ring is called white or metallic.

  • Sweden (north)

  • Sweden (middle)

  • Sweden (south)

  • Norway

  • Finland

  • Estonia.


Markings

 The total number marked from the start in 1994 can be seen in table 1 below.

Table 1. The number of colure-ring marked golden eagles in Sweden, Norway, Finland and Estonia 1994-2010.
Year Sweden Finland Norway Estonia Total
1994 2 - - - 2

1995

36 53 8 - 97
1996 44 81 10 - 135
1997 32 71 27 4 134

1998

58

85

31

4

178

1999 68 76 33 10 187
2000 88 89 30 11 218
2001 67 89 42 0 198
2002 103 97 44 12 256
2003 97 90 50 13 250

2004

147 102 44 6 299

2005

118 78 36 10 242
2006 67 84 37 13 201
2007 149 107 38 8 302
2008 129 84 54 10 277
2009 54 62 30 12 158
2010 96 47 43 8 194
Total 1355 1295 557 121 3328

Observations .

During the season 2009-10,  71 observations of ring marked golden eagles were reported. The ring number was identified on 60 of them.


If you find a colour marked golden eagle, send a message to:
Claes-Göran Ahlgren, Ågården 142, 523 99 Hökerum, Sweden.
His telephone number is +46
033 274 463.
Mail: claesahlgren@hotmail.com


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toto.hedfeldt@telia.com
Latest date of change: 2011
-05-27