House Sparrow

• Despite its name, it is genetically closer to the African weavers than to other passerines.
• It is closely tied to human settlement across almost the whole world.
• It is in steep decline in several European cities.
• conservaciónIt has declined markedly in many European cities over recent decades, for reasons still being studied.

Skeleton type

Vertebrate - pneumatised bony skeleton (bird)

Habitat and environment

Towns, farmland and countryside across almost the whole world, closely tied to human settlement

Birth weight

2.02 grams at hatching

Size at birth

Blind and reddish-skinned on hatching

Sexual maturity

6-9 months

Gestation / incubation

10-14 days

Litter / clutch size

1 to 8 eggs per clutch (3-6 most often), up to 4 broods a year

Life expectancy in captivity

Documented record of up to 13.4 years

Sources consulted: AnAge (genomics.senescence.info) · A-Z Animals · Sialis.org · Natural History Museum · Animal Diversity Web · Invasive Species Centre · Wikipedia (House sparrow)

Best time: All year round; it is tied to towns and farmland almost everywhere in the world.