Groups of western jackdaws are frequently found in cities. Konrad Lorenz analysed the complex social behaviour of these animals.
Western jackdaw, corvid, nest, nidicolous, feather, beak, animal, vertebrates, birds, bird, omnivorous, biology
- Body length: 30-40 cm (11.81-15.75 in)
- Wingspan: 65-75 cm (25.59-29.53 in)
- Body mass: 200-250 g (7.055-8.818 oz)
The western jackdaw is an omnivorous bird feeding mainly on arthropods, worms, fruits and berries. Similarly to the common magpie, the jackdaw likes to pick up shiny objects. Groups of western jackdaws are frequently found in cities. Konrad Lorenz, the Nobel-winning ethologist, analysed the complex social behaviour of these animals. They have a linear hierarchical group structure.
They are monogamous and build nests made of sticks, hair, wool, grasses and other materials in the cavities of trees, cliffs or buildings. Females usually lay 4-5 blue-green eggs with brown speckles, which they incubate. The nestlings hatch after 17-18 days. They can fly 28-35 days after they hatch. The adults then feed the nestling for 4 more weeks after that.
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