EEP Crowned pigeon number 4

EEP STUDBOOK CROWNED PIGEONS SUMMARIES
1.2 Summary of the selected management data
for Goura cristata EEP 1995 - 1999
Age distribution (See 3.1)
The age of 53 individuals (30.5 males and 22.5 females) in the current population was known
on 31 December 1999. There were 14 male specimens and 13 female specimens of unknown
age.
Current population size (See 3.2)
The current population as of 31 December 1999 of the Goura cristata species consists of
35.27.17 (Total: 79).
Number of births and deaths (See 3.3 and 3.4)
In 1995, 14 Goura cristata crowned pigeons were born and 10 died.
In 1996, 17 Goura cristata crowned pigeons were born and 12 died.
In 1997, 9 Goura cristata crowned pigeons were born and 3 died.
In 1998, 4 Goura cristata crowned pigeons were born and 11 died.
In 1999, 6 Goura cristata crowned pigeons were born and 7 died.
Age of individuals at death during the period 1995 – 1999
Age 0-30d 30d-1y 1 + -5y 5 + –10y 10 + -15y 15 + –20y 20 + y Total
Est. 0 1 0 3 2 0 1 7
Known 7 4 11 9 5 0 0 36
Total 7 5 11 12 7 0 1 43
Est. = estimated age, or minimum age, based on date of arrival
Known = age known
Estimated ages are based on date of arrival, thus the age at death for estimated age could be
higher. The mortality of adults in the Goura cristata population did not differ a lot from the
younger age categories. The 0-30 day group comprised only 16,3 % of all deaths.
Transfers, Imports and Exports (See 3.5)
20 transfers were made in 1995, 11 in 1996, 2 in 1997, 5 in 1998 and 6 in 1999. 2 crowned
pigeons were transferred to unknown institutes at unknown dates.
Conclusion
Unfortunately in 1998 and 1999 the deaths exceeded the number of births. In 1995, 1996 and
1997 the births exceeded the deaths. The population of the Goura cristata species is
decreasing in the last two years (1998 – 1999) due to high mortality, despite the imports.
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