Analytics
Static analytics outputs generated from the normalized studbook dataset. Rebuild with npm run analytics:build.
Individuals
3715
Events
8987
Institutions
502
Founders
1430
Updated 27 May 2026, 21:43
Downloads
Births by year
1830 to 2025 · latest 7
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Deaths by year
1830 to 2025 · latest 18
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Transfers by year
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Living population
1830 to 2025 · latest 1087
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Data quality
duplicate ids
0
missing parent refs
59
self parent refs
0
impossible date order
7
orphaned events
0
deceased without dod
94
living with dod
0
missing core fields
360
placeholder institution codes
0
unknown institution codes
63
Top institutions
Taman Margasatwa Ragunan(JAKARTA)
89 living
89 total current · 21 born here · 116 transfer-in events
Taman Safari Indonesia I(BOGOR)
37 living
37 total current · 42 born here · 53 transfer-in events
CENTR OCC
25 living
25 total current · 1 born here · 28 transfer-in events
PASURUAN
23 living
23 total current · 13 born here · 19 transfer-in events
Kebung Binatang Surabaya(SURABAYA)
23 living
23 total current · 12 born here · 59 transfer-in events
Singapore Zoological Gardens(SINGAPORE)
19 living
19 total current · 46 born here · 28 transfer-in events
Sumatran Orangutan Conservation Programme(SOCP)
18 living
18 total current · 0 born here · 20 transfer-in events
KUALA LUM
17 living
17 total current · 23 born here · 24 transfer-in events
Founder contribution
CHARLY (497)
62 living descendants · 119 total descendants · 21 direct children
JOD (564)
46 living descendants · 77 total descendants · 10 direct children
TWIGGY (900)
44 living descendants · 80 total descendants · 10 direct children
SALEH (899)
42 living descendants · 76 total descendants · 5 direct children
KATE (903)
41 living descendants · 77 total descendants · 6 direct children
SALLY (261)
38 living descendants · 73 total descendants · 7 direct children
Top sires
BRUNO/BIMBO (1000)
29 recorded offspring
ZABU (1169)
22 recorded offspring
CHARLY (497)
21 recorded offspring
PONGO (787)
21 recorded offspring
KARL (839)
20 recorded offspring
ATJEH/POP (976)
20 recorded offspring
Top dams
SUSI (794)
16 recorded offspring
TIA (366)
12 recorded offspring
MAGGIE (275)
11 recorded offspring
BULU (436)
10 recorded offspring
RADJA (842)
10 recorded offspring
TWIGGY (900)
10 recorded offspring