เชลยสวีเดนพันธุ์โปรแกรมเริ่มต้นในปี The Swedish captive breeding-programme started in 1974 and is still
และยังคงทำงาน ใน running. In the period 1974-2007 a total of 90 Peregrine Falcons (only of
( Peregrinus the subspecies F. p. peregrinus from wild pairs in Sweden, Norway, Finland
ฟินแลนด์และสกอตแลนด์มีการใช้ ไม่มีนกเหยี่ยวที่มีสายเลือดที่ไม่แน่นอนถูกนำมาใช้ and Scotland have been used). No falconry birds with uncertain pedigree
49 were used. Of 49 females 34 laid a total of 1368 eggs, 605 were fertile and
439 อายุเฉลี่ยสำหรับสตรี 439 young survived until fldging. Average age for egglaying females was
4,8 4,8 years and for females producing fertile eggs 6,2 years. Males were on
average 7,5 years when sexually mature. Average production of fertile eggs
peaked at 8 years and then declined. Average life-time for females was
12 years and the oldest egg-laying female was 16 years. The most productive
female produced 54 young. Nestlings (n=279) were released at 26 hack-sites in
SW Sweden in 1982-1997. 14% died or were hurt and taken care of within two
months of release, while 86% survived until migration started in SeptemberOctober. A minimum of 8% of released birds was later observed as breeding
adults. No signifiant difference in survival was found between hacked and
wild nestlings. The release of falcons was crucial for the positive population
increase observed in SW Sweden and SE Norway in 1990’s and 2000’s.
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