AnAge entry for Molothrus ater
Classification (HAGRID: 00954)
- Taxonomy
-
Kingdom: Animalia
Phylum: Chordata
Class: Aves (Taxon entry)
Order: Passeriformes
Family: Icteridae
Genus: Molothrus
- Species
- Molothrus ater
- Common name
- Brown-headed cowbird
Lifespan, ageing, and relevant traits
- IMR
- 0.45/year
- MRDT
- Not yet available
- Maximum longevity
- 16.9 years (wild)
- Source
- ref. 577
- Sample size
- Medium
- Data quality
- Acceptable
- Observations
IMR was calculated from demographic data in the wild. Females may lay up to 40 eggs in a season [0437].
Life history traits (averages)
- Female sexual maturity
- 365 days
- Male sexual maturity
- 365 days
- Incubation
- 11 days
- Clutch size
- (oviparous)
- Clutches per year
- 1
- Weight at hatching
- 2.22 g
- Adult weight
- 38.1 g
- Postnatal growth rate
- 0.576 days-1 (from logistic function)
Metabolism
- Typical body temperature
- Not yet available
- Basal metabolic rate
- 0.6315 W
- Body mass
- 42.5 g
- Metabolic rate per body mass
- 0.014859 W/g
References
- [0732] Starck and Ricklefs (1998), Avian growth rate data set
- [0577] Klimkiewicz and Futcher (1989), Longevity records of North American birds: Supplement I
- [0425] Bennett and Harvey (1987), Active and resting metabolism in birds: allometry, phylogeny and ecology
- [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 179112
- Animal Diversity Web
- ADW account (if available)
- Encyclopaedia of Life
- Search EOL
- NCBI Taxonomy
- Taxonomy ID 84834
- Entrez
- Search all databases
- Ageing Literature
- Search Google Scholar or Search PubMed
- Images
- Google Image search
- Internet
- Search Google