jay

The Eurasian Jay, a conspicuous member of the corvid family, plays an important role in the ecosystem by dispersing seeds and controlling insect populations. This fact sheet provides a detailed overview of the Eurasian Jay's biology and ecology and highlights the importance of protecting its habitats and food sources.

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Profile: jay

  • Scientific classification

    • Class: Aves (birds)
    • Order: Passeriformes (Passerines)
    • Family: Corvidae (corvids)
    • Genus: Garrulus
    • Species: G. glandarius (Jay)

  • Physical characteristics

    • Size: Body length of 31-35 cm
    • Wingspan: 52-58 cm
    • Weight: 140-190 g
    • Special features: Colorful bird with striking blue-black, white and rust-brown plumage; distinctive black stripe around the eyes and a distinctive crest.

  • Habitat and distribution

    • Common regions: Europe, Asia, parts of North Africa
    • Habitat: Deciduous and mixed forests, parks, gardens, but prefers oak and beech forests.
    • Adaptability: Moderately high, especially in areas with sufficient food supply and suitable nesting sites.

  • Nutrition

    • Diet: Omnivore
    • Typical food: acorns, nuts, seeds, berries, but also invertebrates, bird eggs and young birds.

  • Reproduction and lifestyle

    • Breeding season: spring to summer
    • Nest type: High in trees, often in dense coniferous forests
    • Number of eggs: 4-6 eggs per clutch
    • Incubation period: Approx. 16-17 days
    • Social structure: Usually in pairs or small family groups; territorial during the breeding season.

  • Lifespan and protection status

    • Life expectancy: Up to 8 years in the wild
    • Threat status: Least concern; stable populations, although habitat loss and pesticide use may be problematic.
    • Conservation measures: Preservation and protection of forests and parks to secure habitat and food sources.