Great grey owl lifespan and age in human years
Longest recorded 16.1 years
🏆 The longest-lived great grey owl on record reached 16.1 years in the wild.
Great grey owl (Strix nebulosa). The oldest known individual lived 16.1 years; this chart maps that record to a human age of 120. Most individuals live considerably shorter lives than the record.
- Reaches adulthood at about 12 months
- Adult weight about 1.12 kg
- Incubation about 30 days
- About 2 eggs at a time
How old in human years?
Age
Great grey owl age chart in human years
Shaded rows are equivalent to human age 60+.
| Great grey owl | Human age | Stage |
|---|---|---|
| 1 yr | 18 | Teen |
| 2 yr | 25 | Adult |
| 3 yr | 32 | Adult |
| 4 yr | 38 | Adult |
| 5 yr | 45 | Middle age |
| 6 yr | 52 | Middle age |
| 7 yr | 59 | Middle age |
| 8 yr | 65 | Senior |
| 9 yr | 72 | Senior |
| 10 yr | 79 | Elderly |
| 11 yr | 86 | Elderly |
| 12 yr | 92 | Elderly |
| 13 yr | 99 | Elderly |
| 14 yr | 106 | Elderly |
| 15 yr | 113 | Elderly |
| 16 yr | 119 | Elderly |
| 17 yr | 126 | Elderly |
| 18 yr | 133 | Elderly |
| 19 yr | 140 | Elderly |
Great grey owl profile
| Classification | Aves > Strigiformes > Strigidae |
|---|---|
| Scientific name | Strix nebulosa |
| Adult weight | about 1.1 kg |
| Age of maturity | 12 months |
| Incubation | about 30 days |
| Litter / clutch size | 2 |
| Longest recorded | 16.1 years (wild) |
Sources
How we convert ages: method.
More Birds
BudgerigarLifespan about 8 years
CockatielLifespan about 18 years
Rosy-faced lovebirdLifespan about 12 years
LovebirdLifespan about 12 years
Pacific parrotletLifespan about 15 years
Java sparrowLifespan about 7.5 years
Society finchLifespan about 7 years
CanaryLifespan about 10 years
Grey parrotLifespan about 45 years
White cockatooLifespan about 40 years
Scarlet macawLifespan about 40 years
Chicken (pet)Lifespan about 7 years