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
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 nestlings for 4 more weeks after that.
The animation demonstrates the most important types of feathers and their fine structure.
The archaeopteryx shows characteristics of both birds and reptiles. It is probably the ancestor of birds.
The Arctic tern is famous for its long migration route: it flies from the Arctic to the Antarctic and back again each year.
This animation demonstrates birds' bones and eggs through the example of the common blackbird.
The characteristic colours of the common kingfisher aid the bird in catching its prey.
This animation demonstrates the anatomy of birds through the example of mallards.
Marsh harriers are birds of prey found almost worldwide.
The saker falcon is a large bird of prey widespread in Europe and and Asia.
The life cycle of vertebrates starts with the production of the reproductive cells of an individual and ends with the production of the reproductive cells...
Penguins are birds living in the Antarctic and adapted to cold temperature and swimming.