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Studbook nr. 5, December 2008

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EUROPEAN STUDBOOK CROWNED PIGEONS<br />

3.1 Summary of the management data for Goura scheepmakeri 2000-<br />

<strong>2008</strong><br />

Age distribution<br />

The age of 98 individuals (57 males and 41 females) in the current population was known on 1<br />

<strong>December</strong> <strong>2008</strong>. There were 2 male specimens and 2 female specimens of unknown age.<br />

Current Population size<br />

The current population as of 1 <strong>December</strong> <strong>2008</strong> of the Goura scheepmakeri species which<br />

participate in the ESB programme consists of 41.27.13 (total: 81).<br />

Number of births and deaths<br />

Births Deaths<br />

2000 16 4<br />

2001 10 6<br />

2002 4 6<br />

2003 9 5<br />

2004 8 7<br />

2005 8 7<br />

2006 10 6<br />

2007 9 3<br />

<strong>2008</strong> 6 0<br />

Age of individuals at death during the period 2000-<strong>2008</strong><br />

0-30d 30d-1y 1-5y 5-10y 10-15y 15-20y 20-25y 25y + Total<br />

12 7 8 8 0 3 0 0 38<br />

32% 18% 21% 21% 0% 8% 0% 0% 100%<br />

From 6 pigeons the age is estimated based on date of arrival, thus the age at death could be higher<br />

in reality. The 0-30 day group comprised 32% of all deaths. Only 8% of the Goura scheepmakeri<br />

had reach the age of 15 years.<br />

Transfers<br />

Transfers<br />

2000 11<br />

2001 13<br />

2002 3<br />

2003 5<br />

2004 16<br />

2005 8<br />

2006 2<br />

2007 8<br />

<strong>2008</strong> 3<br />

Conclusion<br />

With the exception of 2002, the Goura scheepmakeri species improved considerably during the<br />

period 2000-<strong>2008</strong>.<br />

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