Swallow chicks. Four swallow (Hirundo rustica) chicks in their nest, calling for food. A breeding pair of swallows build a nest from mud and grass and line it with feathers. The female lays a clutch of 3 to 7 eggs, which both parents incubate until they hatch between 13 to 15 days later. Both parents feed the chicks, which remain in the nest for about 20 days. Swallows usually raise two broods of chicks during the summer. Photographed in the UK.
Science Photo Library was founded in 1981 by Michael Marten, one of the authors of "Worlds Within Worlds", a book exploring different ways to observe the universe - from electron micrographs, to images of earthrise taken from the Apollo spacecraft. When Marten started receiving requests for the beautiful images in the book, he had an idea of setting up Science Photo Library.
Since then, Science Photo Library has continued to work alongside world acclaimed photographers and the leading science and medical experts to provide a central source of the best science and specialist imagery available. Although the collection started with scientific images, it has grown to encompass all aspects of science and their impact on everyday life.
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