AnAge entry for Strix occidentalis
Classification (HAGRID: 01696)
- Taxonomy
-
Kingdom: Animalia
Phylum: Chordata
Class: Aves (Taxon entry)
Order: Strigiformes
Family: Strigidae
Genus: Strix
- Species
- Strix occidentalis
- Common name
- Spotted owl
- Synonyms
- Syrnium occidentale
Lifespan, ageing, and relevant traits
- Maximum longevity
- 25 years (captivity)
- Source
- ref. 1
- Sample size
- Small
- Data quality
- Acceptable
- Observations
Typical animals do not breed before age 3. The average longevity of these animals is about 15 years [0437]. Majority of pairs do not breed every year; some known to not breed over periods of 5-6 years [0445].
Life history traits (averages)
- Female sexual maturity
- 365 days
- Male sexual maturity
- 365 days
- Incubation
- 30 days
- Clutch size
- 2 (oviparous)
- Clutches per year
- Weight at hatching
- Adult weight
- 588.7 g
- Postnatal growth rate
Metabolism
- Typical body temperature
- Not yet available
- Basal metabolic rate
- 2.6750 W
- Body mass
- 571.0 g
- Metabolic rate per body mass
- 0.004685 W/g
References
- [0820] John Dunning (2008), CRC Handbook of Avian Body Masses
- [0435] McKechnie and Wolf (2004), The allometry of avian basal metabolic rate: good predictions need good data (PubMed)
- [0001] Carey and Judge (2000), Longevity Records: Life Spans of Mammals, Birds, Amphibians, Reptiles, and Fish
- [0444] John Terres (1980), The Audubon Society Encyclopedia of North American Birds
- [0437] FEIS by the USDA Forest Service
- [0445] The Birds of North America Online
External Resources
- Integrated Taxonomic Information System
- ITIS 177925
- Animal Diversity Web
- ADW account
- Encyclopaedia of Life
- Search EOL
- NCBI Taxonomy
- Taxonomy ID 201991
- Entrez
- Search all databases
- Ageing Literature
- Search Google Scholar or Search PubMed
- Images
- Google Image search
- Internet
- Search Google