North American Orangutan Population

 
Jambo said:
Sumatran Orangutans 1.0 Elok (2000) and 0.1 Negara (1993) at OKC Zoo will soon be moved to new homes in the coming months. Oklahoma will no longer hold orangutans after their move.

46K views · 961 reactions | We have a bittersweet announcement to share with our OKC Zoo Family In the coming months, our orangutans Elok and Negara will each be moving to new... | By Oklahoma City Zoo and Botanical Garden | Facebook
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Elok will travel in May 2025 and Negara at some later as yet unknown timeline/frame in 2025.
 
 
Pertinax said:
Not so. Very few Orangutans bred successfully in zoos before the 1960's- there were indeed individual breedings, some pairs even producing several young like the famous Sumatran pair 'Guas' and 'Guarina' at Philadelphia Zoo but it was by no means a common occurence. Also, those pairs that did breed tended to have originated together either from Borneo or from Sumatra so many offspring were in fact purebred and hybrids, though undoubtedly occurring, would have been in the minority. Hybrids only started to occur more regularly with the increase in the number of Zoos keeping Orangutans when some 'mixed' pairs of Orangs were inadvertently obtained by a number of Zoos, mostly in the 1960-80's era but even then they only represented a small percentage of the captive-bred Orangutan population...
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Yeah they seem like were an interesting pair, seven offspring between them over a twenty year period, very impressive for back then especially:

0.1 Guarina
Born: Sumatra (wild) ≈1919
Dam: (Wild)
Sire: (Wild)
Caught: ≈1927
Transferred: Havana Zoo ≈1927
Transferred: Philadelphia Zoo 1 May 1931
Died: 16 Jan 1976 (old age - her body donated to Smithsonian Museum)

1.0 Guas
Born: Sumatra (wild) ≈1919
Dam: (Wild)
Sire: (Wild)
Caught: ≈1927
Transferred: Havana Zoo ≈1927
Transferred: Philadelphia Zoo 1 May 1931
Died: 9 February 1977 (infection, though surprised not mentioned as old age too as he outlived Guarina. His body was donated to the Smithsonian Museum also)

↓

0.1 Cinderella
Born: Philadelphia Zoo 22 Jan 1935
Dam: Guarina
Sire: Guas
Transferred: National (Washington) Zoo 8 Feb 1944
Died: 10 May 1947 (unknown means)

0.1 Ivy
Born: Philadelphia Zoo 13 Jun 1937
Dam: Guarina
Sire: Guas
Died: Philadelphia Zoo 24 Jul 1972 (cancer)

1.0 Rusty
Born: Philadelphia Zoo 24 Nov 1940
Dam: Guarina
Sire: Guas
Died: Philadelphia Zoo 20 Feb 1959 (his cause of death could not be determined)

0.1 Blondie/Myrtle
Born: Philadelphia Zoo 20 Aug 1946
Dam: Guarina
Sire: Guas
Transferred: Birmingham Zoo (via Miami Rare Bird Farm 1 day prior) 2 May 1958
Died: 8 December 1974 (her death was described as caused by an environmental/behavioural condition. Her body was donated to Regar Museum in Alabama)

1.0 Pinky
Born: Philadelphia Zoo 6 Dec 1949
Dam: Guarina
Sire: Guas
Died: Philadelphia Zoo 4 Jan 1976 (his death was apparently caused by a cardiovascular bacterial infection. His body was given to the Smithsonian Museum too.)

1.0 Jimmy/Lucky
Born: Philadelphia Zoo 5 Sep 1952
Dam: Guarina
Sire: Guas
Transferred: Birmingham Zoo (via Miami Rare Bird Farm 1 day prior) 2 May 1958 {along with his sister Blondie/Myrtle}
Died: Birmingham Zoo 21 Jun 1977 (unknown cause of death)

0.1 Christine
Born: Philadelphia Zoo 25 Jan 1955
Dam: Guarina
Sire: Guas
Died: Philadelphia Zoo 28 Sep 1983 (cardiovascular circulatory issues)
*Christine went on to have 6 offspring of her own between 1970 and 1982 with a wild born Sumatran orangutan named 1.0 Bung (1956-1991) who arrived at Philadelphia Zoo in August 1962.

**additionally Guas sired three other offspring (with Ivy): 0.1 Princess born 16 Aug 1950 and died 26 Oct 1950; 1.0 Unnamed Male born 27 Dec 1953 and died 5 Jan 1954; and 1.0 Unnamed Male born 3 Sep 1958 and died 15 Sep 1958.
 
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